| Entries |
| Document | Title | Date |
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| 20080237530 | Piezoelectric ceramic composition - A piezoelectric ceramic composition that acquires excellent piezoelectric properties even when it is fired at a low temperature is offered. The piezoelectric ceramic composition possesses a composition corresponding to a solid solution that contains a first compound having a rhombohedral crystal-based perovskite structure, a second compound having a tetragonal crystal-based perovskite structure, and a third compound. The third compound is a compound oxide containing Bi as a first component element, Fe or Mn as a second component element, and a hexavalent metallic element as a third component element. The hexavalent metallic element is at least one kind selected from W and Mo. | 10-02-2008 |
| 20080237531 | Piezoelectric ceramic composition - A piezoelectric ceramic composition having a large piezoelectric constant (d) and as well having a large Qm value is to be provided. The piezoelectric ceramic composition aimed at has a composition corresponding to a solid solution containing a first compound possessing a rhombohedral crystal-based perovskite structure, a second compound possessing a tetragonal crystal-based perovskite structure, and a third compound. The third compound is a compound oxide containing Bi as a first component element, Mn as a second component element, and a tetravalent metallic element or a pentavalent metallic element as a third component element. The tetravalent metallic element is at least one member selected from the group consisting of Ti, Zr, Hf, and Sn. The pentavalent metallic element is at least one member selected from the group consisting of Nb, Ta, and Sb. | 10-02-2008 |
| 20080245990 | Piezoelectric Ceramic Composition - A piezoelectric ceramic composition excellent in all of the electric property Q | 10-09-2008 |
| 20080245991 | Nickel-Molybdenum-Doped Lead Zirconate Titanate, Method for the Production of a Piezoceramic Component Using Said Lead Zirconate Titanate, and Use of the Piezoceramic Component - A piezoceramic composition of a calculated empirical formula Pb | 10-09-2008 |
| 20080258100 | PIEZOELECTRIC CERAMIC COMPOSITION AND RESONATOR - To obtain a piezoelectric ceramic composition having extremely high heat resisting property. Provided is a piezoelectric ceramic composition comprising a main component represented by Pb | 10-23-2008 |
| 20080258101 | Compositions for high power piezoelectric ceramics - Piezoelectric ceramics of the formula Pb | 10-23-2008 |
| 20080272329 | Piezoelectric Ceramic Composition - The present invention provides a piezoelectric ceramic composition, for producing piezoelectric elements exhibiting high piezoelectric strain constant d | 11-06-2008 |
| 20080290315 | Piezoeletric Single Crystal and Method of Production of Same, Piezoelectric Element, and Dielectric Element - A piezoelectric single crystal and piezoelectric and dielectric application parts using the same are provided, which have all of high dielectric constant K | 11-27-2008 |
| 20080290316 | PIEZOELECTRIC CERAMIC COMPOSITION - A piezoelectric ceramic composition represented by the formula (1-x) (K | 11-27-2008 |
| 20080296529 | Piezoelectric thin film, piezoelectric material, and fabrication method of piezoelectric thin film and piezoelectric material, and piezoelectric resonator, actuator element, and physical sensor using piezoelectric thin film - A piezoelectric thin film of the present invention includes an aluminum nitride thin film that contains scandium. A content ratio of scandium in the aluminum nitride thin film is 0.5 atom % to 50 atom % on the assumption that a total amount of the number of scandium atoms and the number of aluminum atoms is 100 atom %. According to this arrangement, the piezoelectric thin film of the present invention can improve a piezoelectric response while keeping characteristics of elastic wave propagation speed, Q value, and frequency-temperature coefficient that the aluminum nitride thin film has. | 12-04-2008 |
| 20090026408 | PIEZOELECTRIC MATERIAL - The present invention provides a piezoelectric material which can be applied even to the MEMS technique, exhibits satisfactory piezoelectricity even at high ambient temperatures and is environmentally clean, namely, a piezoelectric material including an oxide obtained by forming a solid solution composed of two perovskite oxides A(1)B(1)O | 01-29-2009 |
| 20090065731 | Method for producing piezoelectric ceramic - To provide a method for producing a piezoelectric ceramic which can improve toughness thereof. Provided is a method for producing a piezoelectric ceramic which includes a step of polarizing a piezoelectric ceramic having a main component represented by a composition formula Pb | 03-12-2009 |
| 20090114875 | PEROVSKITE OXIDE, FERROELECTRIC FILM AND FERROELECTRIC DEVICE CONTAINING THE PEROVSKITE OXIDE - A perovskite oxide having a composition expressed by a compositional formula, | 05-07-2009 |
| 20090140197 | PIEZOELECTRIC ELEMENT, AND LIQUID JET HEAD AND ULTRASONIC MOTOR USING THE PIEZOELECTRIC ELEMENT - There is disclosed a piezoelectric element having, on a substrate, a piezoelectric body and a pair of electrodes which come in contact with the piezoelectric body, wherein the piezoelectric body consists of a perovskite type oxide represented by the following formula (1): | 06-04-2009 |
| 20090159833 | COMPOSITIONS FOR HIGH POWER PIEZOELECTRIC CERAMICS - A class of ceramic compositions according to the formula Pb | 06-25-2009 |
| 20090189112 | PIEZOELECTRIC/ELECTROSTRICTIVE CERAMICS AND PROCESS FOR PRODUCING THE SAME - Piezoelectric/electrostrictive ceramics are provided, which exhibit only a small change in properties after polarization, high insulating properties, and narrow variations in durability. A piezoelectric/electrostrictive element has a laminated structure in which an electrode film, a piezoelectric/electrostrictive film, another electrode film, another piezoelectric/electrostrictive film, and another electrode film are laminated in order of mention on a thin portion of a substrate. The piezoelectric/electrostrictive films are ceramic films that include a perovskite oxide containing lead as an A-site component and magnesium, nickel, niobium, titanium, and zirconium as B-site components. Crystal grains in the piezoelectric/electrostrictive films have a core/shell structure with the shell portion having a higher concentration of nickel than the core portion and with the core portion having a higher concentration of magnesium than the shell portion. Such piezoelectric/electrostrictive films can be formed by firing a piezoelectric/electrostrictive material powder synthesized from a columbite compound. | 07-30-2009 |
| 20090194732 | METHOD OF MAKING TERNARY PIEZOELECTRIC CRYSTALS - A ternary single crystal relaxor piezoelectric grown from a novel melt using the Vertical Bridgeman method. The ternary single crystals are characterized by a Curie temperature, T | 08-06-2009 |
| 20090230346 | PIEZOELECTRICS, PIEZOELECTRIC ELEMENT, AND PIEZOELECTRIC ACTUATOR - A piezoelectric body includes a perovskite type compound that is expressed by a compositional formula being Pb (Zr | 09-17-2009 |
| 20090267016 | PIEZOELECTRIC CERAMIC COMPOSITION AND PIEZOELECTRIC CERAMIC - A piezoelectric ceramic composition including potassium-sodium-lithium niobate, bismuth-sodium titanate and bismuth ferrate is provided. A piezoelectric ceramic obtained by firing the piezoelectric ceramic composition, wherein the electromechanical coupling factor is high, the piezoelectric g | 10-29-2009 |
| 20100019187 | PIEZOELECTRIC/ELECTROSTRICTIVE CERAMICS SINTERED BODY AND PIEZOELECTRIC/ELECTROSTRICTIVE DEVICE USING THE SAME - There is disclosed a piezoelectric/electrostrictive ceramics which is a sintered body having a structure where a matrix and a filler are brought into a composite, the matrix is made of an alkali niobate-based piezoelectric/electrostrictive material, which includes a large number of grains combined with one another, including a perovskite type oxide, which includes at least one element selected from the group consisting of Li, Na and K as an A site constituent element and Nb as a B site constituent element, as a main crystal phase, the filler is made of a material (with the proviso that an alkali niobate-based material is excluded) having a thermal expansion coefficient smaller than that of the alkali niobate-based piezoelectric/electrostrictive material, and the volume fraction of the filler with respect to the total volume of the matrix and the filler is 0.5 vol % or more and below 10 vol %. | 01-28-2010 |
| 20100025617 | METAL OXIDE - Provided is a piezoelectric material excellent in piezoelectricity. The piezoelectric material includes a perovskite-type complex oxide represented by the following General Formula (1). | 02-04-2010 |
| 20100127206 | Method for Forming a Nanostructure, a Nanostructure, and a Device Using the Same - A method for forming a nanostructure, a nanostructure and a device using the nanostructure, wherein hydroxide ions are provided to a surface of a nanostructure including a piezoelectric material in order to etch an outer surface of the nanostructure. In an exemplary embodiment, the nanostructure may be etched by contacting the nanostructure with a basic solution. In other exemplary embodiments the etching of the nanostructure may be performed while controlling at least one of the concentration of the basic solution, the temperature of the basic solution and the etching time. The resultant nanostructure includes a piezoelectric material and has an etched outer surface. The nanostructure may be applied to various devices. | 05-27-2010 |
| 20100133461 | NBT based lead-free piezoelectric materials for high power applications - Piezoelectric compounds of the formula xNa | 06-03-2010 |
| 20100155646 | PIEZOELECTRIC MATERIAL - Provided is a piezoelectric material in which the product of the piezoelectric constant and the Young's modulus is large to give excellent piezoelectricity without using lead. A piezoelectric material including a perovskite type crystal represented by a compositional formula of ABO | 06-24-2010 |
| 20100155647 | OXYNITRIDE PIEZOELECTRIC MATERIAL AND METHOD OF PRODUCING THE SAME - Provided are an oxynitride piezoelectric material which exhibits ferroelectricity and has good piezoelectric properties and a method of producing the oxynitride piezoelectric material. The oxynitride piezoelectric material includes a tetragonal perovskite-type oxynitride represented by the following general formula (1): | 06-24-2010 |
| 20100171063 | PREPARATION OF PEROVSKITE NANOCRYSTALS VIA REVERSE MICELLES - The present invention is directed to perovskite nanostructures of Formula ABO | 07-08-2010 |
| 20100187466 | PIEZOELECTRIC CERAMIC, AND PIEZOELECTRIC, DIELECTRIC OR PYROELECTRIC ELEMENT USING THE SAME - A piezoelectric solid solution composition containing, as a main component, a composition represented by the following general formula: | 07-29-2010 |
| 20100224818 | FREESTANDING FILMS WITH ELECTRIC FIELD-ENHANCED PIEZOELECTRIC COEFFICIENTS - A method to produce low-temperature sinterable powders which are then subsequently used to fabricate freestanding piezoelectric films with very large electric-field-enhanced piezoelectric response is provided. The −d | 09-09-2010 |
| 20100264354 | PIEZOELECTRIC CERAMIC COMPOSITION | 10-21-2010 |
| 20100264355 | PIEZOELECTRIC CERAMIC COMPOSITION AND PIEZOELECTRIC ELEMENT MADE BY USING THE SAME - The present invention provides a piezoelectric ceramic composition having a high thermal resistance and a high piezoelectric distortion constant and a piezoelectric element using the piezoelectric ceramic composition. The piezoelectric ceramic composition of the present invention contains Na, Bi, Ti, Cr and O, wherein the content ratio of Na, Bi, Ti and Cr in terms of oxides thereof falls within the following composition range: aNa | 10-21-2010 |
| 20100294976 | COMPOSITION FOR ENERGY GENERATOR, STORAGE, AND STRAIN SENSOR AND METHODS OF USE THEREOF - Compositions and devices for harvesting electrical energy from mechanical and thermal energy, storing such produced energy, and sensing strain based on low cost materials and processes. In embodiments, the compositions are flexible and include a flexible polymer embedded and coated with a nanostructured piezoelectric material. | 11-25-2010 |
| 20110006243 | PEROVSKITE OXIDE, OXIDE COMPOSITION, OXIDE BODY, PIEZOELECTRIC DEVICE, AND LIQUID DISCHARGE APPARATUS - A perovskite oxide represented by a general expression, | 01-13-2011 |
| 20110012049 | METHOD FOR PRODUCING CRYSTALLOGRAPHICALLY ORIENTED CERAMIC - A method for producing a crystallographically oriented ceramic according to the present invention includes a preparation step of preparing a template layer having uniform crystal orientation in a predetermined direction, a formation step of forming a shaped body including a matrix layer arranged on the template layer, the matrix layer being composed of a mixed material that contains a lead-containing material and an additional material containing lithium and boron, and a firing step of firing the shaped body formed in the formation step at a predetermined firing temperature. Furthermore, after the firing step, a post-annealing step of heating the shaped body to remove lithium and boron may be included. | 01-20-2011 |
| 20110012050 | PIEZOELECTRIC MATERIAL - Provided is a piezoelectric material including a lead-free perovskite-type composite oxide which is excellent in piezoelectric characteristics and temperature characteristics and is represented by the general formula (1): | 01-20-2011 |
| 20110017936 | PIEZOELECTRIC CERAMIC AND PIEZOELECTRIC CERAMIC COMPOSITION - A piezoelectric ceramic | 01-27-2011 |
| 20110037015 | LEAD-FREE PIEZOELECTRIC MATERIAL - Problem to be Solved An object of the present invention is to provide a lead-free piezoelectric material capable of showing a high piezoelectric coefficient (d | 02-17-2011 |
| 20110175012 | PIEZOELECTRIC THIN FILM, INK JET HEAD, METHOD FOR FORMING IMAGE WITH THE INK JET HEAD, ANGULAR VELOCITY SENSOR, METHOD FOR MEASURING ANGULAR VELOCITY WITH THE ANGULAR VELOCITY SENSOR, PIEZOELECTRIC GENERATING ELEMENT AND METHOD FOR GENERATING ELECTRIC POWER WITH THE PIEZOELECTRIC GENERATING ELEMENT - Provided is a lead-free piezoelectric thin film containing a lead-free ferroelectric material and having low dielectric loss, high electromechanical coupling coefficient and high piezoelectric constant comparable to that of lead zirconate titanate (PZT). The piezoelectric thin film of the present invention has a (Bi, Na, Ba)TiO | 07-21-2011 |
| 20110204277 | COMPOSITIONS FOR HIGH POWER PIEZOELECTRIC CERAMICS - A class of ceramic compositions according to the formula Pb | 08-25-2011 |
| 20110233451 | HYBRID PIEZOELECTRIC COMPOSITES WITH HIGH ELECTROMECHANICAL CHARACTERISTICS - A hybrid piezoelectric composite comprises a layer of a polymer matrix comprising particles of a PZT group in a micro range of dimensions, which is sandwiched between two layers of a polymer matrix comprising particles of a dielectric material in a nano range of dimensions. The materials of both layers are polarized with electrothermal polarization. The polymer matrices of both component composites may comprise high-density polyethylene, polyvinylidene fluoride, polypropylene, or low-density polyethylene. The dielectric material of the first component nanocomposite may be selected from the group consisting of SiO | 09-29-2011 |
| 20110240908 | Electret composites polymer-piezoelectric with deep trapping centers on the interphase boundary - An electret composite comprising a polymer matrix material that contains particles of a piezoelectric material with deep trapping centers on the interphase boundaries between the matrix and particles of a piezoelectric material. The piezoelectric material may have a tetragonal or a rhombohedral structure, and the polymer matrix material may be selected from high-density polyethylene, polyvinylidene fluoride, and a copolymer of vinylidenechloride and tetrafluoroethylene. The composite has a potential difference>500V, lifespan>10 years, dielectric permeability≧20, specific electric resistance≧10 | 10-06-2011 |
| 20120018664 | METHOD OF PRODUCING A LEAD ZIRCONIUM TITANATE-BASED SINTERED BODY, LEAD ZIRCONIUM TITANATE-BASED SINTERED BODY, AND LEAD ZIRCONIUM TITANATE-BASED SPUTTERING TARGET - To obtain a method of producing a high-density lead zirconium titanate-based sintered body having uniform crystalline phases and containing a large amount of PbO, provided is a method of producing a lead zirconium titanate-based sintered body, including: producing a pre-sintered body by sintering raw material powder of lead zirconium titanate having a stoichiometric composition at a temperature of 900° C. or more and 1,200° C. or less; pulverizing the pre-sintered body; producing lead-excessive mixed powder by adding PbO powder to powder obtained by pulverizing the pre-sintered body; and sintering the lead-excessive mixed powder at a temperature lower than the sintering temperature of the pre-sintered body. Because the sintering process is divided into two stages, a high-density (e.g., 95% or more) PZT sintered body constituted only of PZT having a stoichiometric composition in which PbZrO | 01-26-2012 |
| 20120037839 | TEMPERATURE AND FIELD STABLE RELAXOR-PT PIEZOELECTRIC SINGLE CRYSTALS - The application is directed to piezoelectric single crystals having shear piezoelectric coefficients with enhanced temperature and/or electric field stability. These piezoelectric single crystal may be used, among other things, for vibration sensors as well as low frequency, compact sonar transducers with improved and/or enhanced performance. | 02-16-2012 |
| 20120043494 | PIEZOELECTRIC SINGLE CRYSTAL INGOT, PRODUCING METHOD THEREFOR AND PIEZOELECTRIC SINGLE CRYSTAL DEVICE - A piezoelectric single crystal ingot is produced by the Bridgman method and contains a relaxor having a composition of Pb(Mg, Nb)O | 02-23-2012 |
| 20120080636 | PIEZOELECTRIC CERAMIC, PIEZOELECTRIC ELEMENT COMPRISING IT, AND PIEZOELECTRIC DEVICE COMPRISING PIEZOELECTRIC ELEMENT - According to a preferred embodiment, the piezoelectric ceramic includes a complex oxide having the composition represented by formula (1) or (2), and Mn at 0.2-1.2 mass % or 0.2-3 mass %, respectively, in terms of MnCO | 04-05-2012 |
| 20120104309 | LEAD-BASED PIEZOELECTRIC MATERIAL AND PRODUCTION METHOD THEREFOR - A lead-based particulate piezoelectric material has a median diameter of less than 1 μm and a particle size distribution expressed by [arithmetic deviation/mean] of no greater than 15% and in which no less than 85% of all particles are cubic. | 05-03-2012 |
| 20120145943 | High Curie temperature ternary piezoelectric ceramics - A preferred piezoelectric ceramic material is a BiFeO | 06-14-2012 |
| 20120181474 | CERAMIC MATERIAL AND PROCESS FOR PRODUCING THE CERAMIC MATERIAL - A material includes a ceramic material having a general formula of | 07-19-2012 |
| 20120187325 | Piezo-Electric Ceramic Composition, Method for Producing the Composition, and Electric Component Comprising the Composition - A piezoelectric ceramic composition comprising: a matrix material comprising at least two matrix components having a perovskite structure or consisting of said matrix components; a first matrix component being selected from (Bi | 07-26-2012 |
| 20120217430 | PIEZOELECTRIC ELEMENT, LIQUID EJECTING HEAD, AND LIQUID EJECTING APPARATUS - A piezoelectric element comprises a piezoelectric layer and an electrode provided with the piezoelectric layer. The piezoelectric layer is made of a composite oxide containing bismuth ferrite, barium titanate, and bismuth zinc titanate. | 08-30-2012 |
| 20120280165 | PIEZOELECTRIC FILM AND METHOD OF MANUFACTURING THE SAME, INK JET HEAD, METHOD OF FORMING IMAGE BY THE INK JET HEAD, ANGULAR VELOCITY SENSOR, METHOD OF MEASURING ANGULAR VELOCITY BY THE ANGULAR VELOCITY SENSOR, PIEZOELECTRIC GENERATING ELEMENT, AND METHOD OF GENERATING ELECTRIC POWER USING THE PIEZOELECTRIC GENERATING ELEMENT - It is an object of the present invention to provide a lead-free piezoelectric film including a lead-free ferroelectric material and having low dielectric loss and high piezoelectric performance comparable to that of PZT, and a method of manufacturing the lead-free piezoelectric film. | 11-08-2012 |
| 20120292553 | COMPOSITIONS FOR HIGH POWER PIEZOELECTRIC CERAMICS - PZT ceramic materials having a base formula of: | 11-22-2012 |
| 20130015391 | METHOD FOR THE PREPARATION AT LOW TEMPERATURES OF FERROELECTRIC THIN FILMS, THE FERROELECTRIC THIN FILMS THUS OBTAINED AND THEIR APPLICATIONSAANM Lousada Silveirinha Vilarinho; Paula MariaAACI AveiroAACO PTAAGP Lousada Silveirinha Vilarinho; Paula Maria Aveiro PTAANM Wu; AiyingAACI AveiroAACO PTAAGP Wu; Aiying Aveiro PTAANM Calzada; Maria LourdesAACI CosladaAACO ESAAGP Calzada; Maria Lourdes Coslada ESAANM Jimenez Rioboo; RicardoAACI Las Rozas de MadridAACO ESAAGP Jimenez Rioboo; Ricardo Las Rozas de Madrid ESAANM Bretos; IgnosAACI MadridAACO ESAAGP Bretos; Ignos Madrid ES - A processing technology is for the fabrication at low temperatures of ferroelectric crystalline oxide thin films, among others PbZr | 01-17-2013 |
| 20130015392 | PIEZOELECTRIC FILM AND METHOD FOR MANUFACTURING THE SAME, PIEZOELECTRIC FILM ELEMENT AND METHOD FOR MANUFACTURING THE SAME, AND PIEZOELECTRIC FILM DEVICEAANM SUENAGA; KazufumiAACI Tsuchiura-shiAACO JPAAGP SUENAGA; Kazufumi Tsuchiura-shi JPAANM Shibata; KenjiAACI Tsukuba-shiAACO JPAAGP Shibata; Kenji Tsukuba-shi JPAANM Watanabe; KazutoshiAACI Tsuchiura-shiAACO JPAAGP Watanabe; Kazutoshi Tsuchiura-shi JPAANM Nomoto; AkiraAACI Kasumigaura-shiAACO JPAAGP Nomoto; Akira Kasumigaura-shi JPAANM Horikiri; FumimasaAACI Nagareyama-shiAACO JPAAGP Horikiri; Fumimasa Nagareyama-shi JP - There is provided a piezoelectric film having an alkali niobate-based perovskite structure expressed by a general formula (Na | 01-17-2013 |
| 20130020524 | HIGH TEMPERATURE PIEZOELECTRIC CERAMICS - Piezoelectric ceramics that can be used in high temperature actuators. The piezoelectric ceramics have various desirable properties, for example the materials do not depole up to about 400° C. and have large piezoelectric coefficients>400 pm/V. In addition the thickness mode electromechanical coupling coefficient is large, increasing from 0.5 to 0.65 with temperature. The planar electromechanical coefficient is around 0.40 and does not show a significant dependence on temperature. These materials are highly polarizable with remnant polarization around 50 μC/cm | 01-24-2013 |
| 20130020525 | PIEZOELECTRIC MATERIAL, METHOD OF MANUFACTURING THE SAME, AND PIEZOELECTRIC DEVICE - Provided is a piezoelectric material having good piezoelectric properties and a Curie temperature (Tc) of 150° C. or higher, and a piezoelectric device using the piezoelectric material. The piezoelectric material includes a sintered body made of a perovskite-type metal oxide represented by the following general formula (1): xBi(Mg | 01-24-2013 |
| 20130043422 | METHODS FOR FORMING LEAD ZIRCONATE TITANATE NANOPARTICLES - Methods for forming lead zirconate titanate (PZT) nanoparticles are provided. The PZT nanoparticles are formed from a precursor solution, comprising a source of lead, a source of titanium, a source of zirconium, and a mineraliser, that undergoes a hydrothermal process. The size and morphology of the PZT nanoparticles are controlled, in part, by the heating schedule used during the hydrothermal process. | 02-21-2013 |
| 20130056671 | PIEZOELECTRIC CERAMICS, MANUFACTURING METHOD FOR PIEZOELECTRIC CERAMICS, PIEZOELECTRIC ELEMENT, LIQUID DISCHARGE HEAD, LIQUID DISCHARGE APPARATUS, ULTRASONIC MOTOR, OPTICAL APPARATUS, VIBRATION GENERATOR, DUST REMOVING DEVICE, IMAGING APPARATUS, AND ELECTRONIC APPARATUS - Provided is a piezoelectric ceramics that can achieve both high piezoelectric performance and a high Curie temperature. Also provided are a piezoelectric element, a liquid discharge head, an ultrasonic motor, and a dust removing device, which use the piezoelectric ceramics. The piezoelectric ceramics include a perovskite-type metal oxide expressed by a general formula (1): xBaTiO | 03-07-2013 |
| 20130112910 | PRECURSOR SOLUTION FOR PIEZOELECTRIC FILMS, METHOD FOR MANUFACTURING THE SAME, AND METHOD FOR MANUFACTURING PIEZOELECTRIC FILM - Some kinds of carboxylic acids have a stabilizing effect on metal alkoxides and, in a precursor solution, are unlikely to cause a reduced storage stability and an increased viscosity of the precursor solution even when their content is increased; they can be used in the solvent component of the precursor solution. The carboxylic acid content is preferably in a range of 20% by mass to 60% by mass, both inclusive, of the total amount of the raw materials used to prepare the precursor solution. The carboxylic acid component prevents the hydrolysis due to the moisture in the air when the carboxylic acid content is equal to or more than 20% by mass. When the carboxylic acid content is equal to or less than 60% by mass, furthermore, the resulting precursor film will have a sufficiently large thickness. | 05-09-2013 |
| 20130153812 | LEAD-FREE PIEZOELECTRIC MATERIALS WITH ENHANCED FATIGUE RESISTANCE - A lead-free piezoelectric ceramic material has the general chemical formula xBi(A | 06-20-2013 |
| 20130161556 | LEAD-FREE PIEZOELECTRIC MATERIAL BASED ON BISMUTH ZINC TITANATE-BISMUTH POTASSIUM TITANATE-BISMUTH SODIUM TITANATE - A lead-free piezoelectric ceramic material has the general chemical formula xBi(Zn | 06-27-2013 |
| 20130168596 | Pb(Hf,Ti)O3 BASED HIGH PERFORMANCE POLYCRYSTALLINE PIEZOELECTRIC MATERIALS - A ternary polycrystalline material based on lead hafnate (PbHfO | 07-04-2013 |
| 20130168597 | Structured Layers Composed of Crosslinked or Crosslinkable Metal-Organic Compounds, Shaped Bodies Containing Them as well as Processes for Producing Them - The invention relates to a process for producing a structured shaped body or a layer of this type from a precursor of a metal oxide or mixed oxide selected from among magnesium, strontium, barium, aluminum, gallium, indium, silicon, tin, lead and the transition metals. | 07-04-2013 |
| 20130193367 | PIEZOELECTRIC COMPOSITION AND PIEZOELECTRIC ELEMENT - A piezoelectric compound having no occurrence of segregation or uneven structures as well as a piezoelectric element having excellent piezoelectric properties. The piezoelectric composition includes a main component that is a perovskite-typed oxide represented by formula of ABO | 08-01-2013 |
| 20130207020 | CERAMIC - The present invention relates to a ceramic comprising (or consisting essentially of) a solid solution containing Bi, K, Ti and Fe (and optionally Pb) which exhibits piezoelectric behaviour. | 08-15-2013 |
| 20130228715 | CERAMIC MATERIAL BASED ON THE PEROVSKITE CERAMIC Bi0, 5Na0, 5TiO3, PIEZOELECTRIC ACTUATOR CONTAINING THE CERAMIC MATERIAL AND PROCESS FOR PRODUCING THE CERAMIC MATERIAL - A ceramic material having the general formula (BiXNayM<1>zLuM<2>Vw) (Ti1-sZs)03, where: M<1> comprises at least one element of main group 1, M<2> comprises at least one element of main group 2, L comprises at least one element of the lanthanides, V is a vacancy and Z is selected from among Zr, Hf and combinations thereof, is provided. Furthermore, a piezoelectric actuator comprising the ceramic material and a process for producing the ceramic material are provided. | 09-05-2013 |
| 20130256580 | FERROELECTRIC THIN FILM-FORMING SOL-GEL SOLUTION - When a ferroelectric thin film-forming sol-gel solution contains a PZT-based compound, a viscosity-adjusting macromolecular compound including polyvinylpyrrolidone, and an organic dopant including a formamide-based solvent, the PZT-based compound is included at 17 mass % or more in terms of an oxide, the molar ratio of the polyvinylpyrrolidone to the PZT-based compound is PZT-based compound:polyvinylpyrrolidone=1:0.1 to 0.5 in terms of a monomer, and the formamide-based solvent is included at 3 mass % to 13 mass % of the sol-gel solution, it is possible to form a thick layer by coating the sol-gel solution once, the production efficiency improves, and crack-free and dense film formation even after calcination and firing becomes possible. | 10-03-2013 |
| 20130256581 | POLYMER COMPOSITE PIEZOELECTRIC BODY AND MANUFACTURING METHOD FOR THE SAME - A polymer composite piezoelectric body is obtained by conducting polarization treatment on a composite having piezoelectric particles uniformly mixed by dispersion in a polymer matrix containing cyanoethylated polyvinyl alcohol. | 10-03-2013 |
| 20140027665 | COMPOSITIONS FOR HIGH POWER PIEZOELECTRIC CERAMICS - A PZT-type piezoelectric ceramic material having a perovskite structure of the ABO | 01-30-2014 |
| 20140077119 | ALKALI NIOBATE-BASED PIEZOELECTRIC MATERIAL AND A METHOD FOR MAKING THE SAME - An alkali niobate-based piezoelectric material having the general formula {(K | 03-20-2014 |
| 20140124695 | PIEZOELECTRIC MATERIAL, PIEZOELECTRIC ELEMENT, AND ELECTRONIC APPARATUS - Provided is a lead-free piezoelectric material having satisfactory and stable piezoelectric constant and mechanical quality factor in a wide practical use temperature range. The piezoelectric material includes a perovskite-type metal oxide represented by Formula (1): (Ba | 05-08-2014 |
| 20140131611 | PIEZOELECTRIC MATERIAL - A lead-free piezoelectric material that has stable, excellent piezoelectric constant and mechanical quality factor in a wide operating temperature range is provided. A piezoelectric material include a perovskite-type metal oxide represented by (Ba | 05-15-2014 |
| 20140145106 | PIEZOELECTRIC MATERIAL - A lead-free piezoelectric material that does not undergo depolarization in a wide operating temperature range and has a good piezoelectric constant is provided. A piezoelectric material include a perovskite-type metal oxide represented by (Ba | 05-29-2014 |
| 20140264142 | METHOD FOR INSERTING OR DISPERSING PARTICLES WITH PIEZOELECTRIC PROPERTIES INSIDE A LAYER - A method is described for inserting or dispersing quartz within a substrate containing polymers polarizable by an electromagnetic field having electrical resistivity, from an insulator to conductor or vice versa, modifiable by said field. The method involves dispersing in the substrate particles having a sandwich structure including two conductive layers and a layer with piezoelectric characteristics in the middle. | 09-18-2014 |
| 20140319405 | POLING TREATMENT METHOD, MAGNETIC FIELD POLING DEVICE, AND PIEZOELECTRIC FILM - To perform poling treatment in a simple procedure by dry process. An aspect of the invention is a magnetic field poling device including: a first holding part configured to hold a film-to-be-poled | 10-30-2014 |
| 20140339458 | PIEZOELECTRIC CERAMIC AND PIEZOELECTRIC DEVICE CONTAINING THE SAME - A piezoelectric ceramic contains a major proportion of potassium sodium niobate and has a carbon content after firing of 55 to 1,240 ppm by mass. | 11-20-2014 |
| 20140339459 | METHOD FOR MANUFACTURING A PIEZOELECTRIC CERAMIC BODY - The present invention relates to a method of manufacturing a piezoelectric ceramic body and devices therefrom. The method comprises mixing a piezoelectric ceramic powder with a polymer binder and surfactant to form a slip mixture, casting the slip mixture into a mold and setting to the slip mixture in the mold to form a green body, cutting the green body to form a cut green body with an array of micron-sized ceramic elements and separation, and sintering the cut green body to form a sintered ceramic body. The sintered ceramic body can be further process to encasing in a polymer material to form a piezoelectric ceramic-polymer composite. The piezoelectric ceramic-polymer composite can be further processed to form devices such as acoustic transducers and sensors. | 11-20-2014 |
| 20140374642 | METHODS FOR FORMING LEAD ZIRCONATE TITANATE NANOPARTICLES - Methods for forming lead zirconate titanate (PZT) nanoparticles are provided. The PZT nanoparticles are formed from a precursor solution, comprising a source of lead, a source of titanium, a source of zirconium, and a mineraliser, that undergoes a hydro thermal process. The size and morphology of the PZT nanoparticles are controlled, in part, by the heating schedule used during the hydro thermal process. | 12-25-2014 |
| 20150028249 | PIEZOELECTRIC CERAMICS, PIEZOELECTRIC ELEMENT, LIQUID EJECTION HEAD, ULTRASONIC MOTOR, AND DUST REMOVING DEVICE - Provided is a lead-free piezoelectric ceramics having enhanced mechanical quality factor (Qm) and mechanical strength. The piezoelectric ceramics, includes at least a first crystal grain and a second crystal grain. The first crystal grain has an average equivalent circle diameter of 2 μm or more and 30 μm or less. The first crystal grain includes a perovskite-type metal oxide represented by the following general formula (1) as a main component, and the second crystal grain includes a perovskite-type metal oxide represented by the following general formula (2) as a main component: (1) xBaTiO | 01-29-2015 |
| 20150041701 | PIEZOELECTRIC MATERIAL, PIEZOELECTRIC ELEMENT, AND ELECTRONIC APPARATUS - Provided is a lead-free piezoelectric material having satisfactory piezoelectric constant and mechanical quality factor in a device driving temperature range (−30° C. to 50° C.) The piezoelectric material includes a main component containing a perovskite-type metal oxide represented by Formula 1, a first auxiliary component composed of Mn, and a second auxiliary component composed of Bi or Bi and Li. The content of Mn is 0.040 parts by weight or more and 0.500 parts by weight or less based on 100 parts by weight of the metal oxide on a metal basis. The content of Bi is 0.042 parts by weight or more and 0.850 parts by weight or less and the content of Li is 0.028 parts by weight or less (including 0 parts by weight) based on 100 parts by weight of the metal oxide on a metal basis. | 02-12-2015 |
| 20150053884 | PIEZOELECTRIC MATERIAL, PIEZOELECTRIC ELEMENT, AND ELECTRONIC APPARATUS - The present invention provides a lead-free piezoelectric material having a high piezoelectric constant and a high mechanical quality factor in a wide operating temperature range. The piezoelectric material includes a perovskite-type metal oxide represented by Formula (1): | 02-26-2015 |
| 20150053885 | PIEZOELECTRIC CERAMIC, METHOD FOR MANUFACTURING PIEZOELECTRIC CERAMIC, PIEZOELECTRIC ELEMENT, AND ELECTRONIC DEVICE - A piezoelectric ceramic contains a main component, Mn as a first auxiliary component, and a second auxiliary component containing at least one element selected from the group consisting of Cu, B, and Si. The main component contains a perovskite metal oxide having the following general formula (1): | 02-26-2015 |
| 20150076391 | TEMPERATURE AND FIELD STABLE RELAXOR-PT PIEZOELECTRIC SINGLE CRYSTALS - The application is directed to piezoelectric single crystals having shear piezoelectric coefficients with enhanced temperature and/or electric field stability. These piezoelectric single crystal may be used, among other things, for vibration sensors as well as low frequency, compact sonar transducers with improved and/or enhanced performance. | 03-19-2015 |
| 20150102253 | PIEZOELECTRIC MATERIALS FOR LOW SINTERING - The present invention relates to a piezoelectric material for low sintering and more particularly, to piezoelectric materials for low sintering having a composition formula of Pb(Zr, Ti)O | 04-16-2015 |
| 20150129792 | PIEZOELECTRIC COMPOSITION AND PIEZOELECTRIC ELEMENT - The present invention aims to provide an excellent piezoelectric composition and an excellent piezoelectric element if the piezoelectric properties especially a high spontaneous polarization and a sufficiently high resistivity, the low pollution, the environment and the ecology are considered. In the piezoelectric composition, the main component contains the substance represented by the following formula with a perovskite-typed structure, (Bi | 05-14-2015 |
| 20150349238 | PIEZOELECTRIC MATERIAL, PIEZOELECTRIC ELEMENT, METHOD FOR MANUFACTURING PIEZOELECTRIC ELEMENT, AND ELECTRONIC DEVICE - The present invention can provide a lead-free piezoelectric material having a high piezoelectric constant in the room temperature range. The present invention for this purpose is a piezoelectric material including a main component containing a perovskite metal oxide represented by following general formula (1), | 12-03-2015 |
| 20150349241 | PIEZOELECTRIC MATERIAL, PIEZOELECTRIC ELEMENT, METHOD FOR MANUFACTURING PIEZOELECTRIC ELEMENT, AND ELECTRONIC DEVICE - A piezoelectric material that does not contain lead and has excellent and stable piezoelectric properties in a device operating temperature range is provided. The present invention for this purpose is a piezoelectric material including a main component containing a perovskite metal oxide represented by following general formula (1), a first auxiliary component containing Mn, and a second auxiliary component containing Bi charge-disproportionated into trivalent and pentavalent, wherein an amount of the contained Mn is 0.0020 moles or more and 0.0150 moles or less relative to 1 mole of the metal oxide, and an amount of the contained Bi is 0.0004 moles or more and 0.0085 moles or less relative to 1 mole of the metal oxide. | 12-03-2015 |
| 20150353430 | CERAMIC COMPOSITION - A novel ceramic composition having a high relative dielectric constant. A ceramic composition includes a unit cell having at least two crystal structures selected from the group made of a monoclinic crystal, a tetragonal crystal, an orthorhombic crystal, and a rhombohedral crystal, characterized in that when the crystal structures are represented by the symmetry notation according to the Glazer method, namely x | 12-10-2015 |
| 20150364672 | PIEZOELECTRIC MATERIAL, PIEZOELECTRIC DEVICE, AND ELECTRONIC APPARATUS - A piezoelectric material that has good insulating properties and piezoelectricity and is free of lead and potassium and a piezoelectric element that uses the piezoelectric material are provided. The piezoelectric material contains copper and a perovskite-type metal oxide represented by general formula (1): (1−x){(Na | 12-17-2015 |
| 20150368161 | PIEZOELECTRIC MATERIAL, PIEZOELECTRIC ELEMENT, AND ELECTRONIC EQUIPMENT - There are provided a lead- and potassium-free piezoelectric material that has a high Curie temperature and a high mechanical quality factor and is stable in long-term driving and a piezoelectric element including the lead- and potassium-free piezoelectric material. A piezoelectric material containing a perovskite-type metal oxide having the general formula (1): Na | 12-24-2015 |
| 20150368162 | PIEZOELECTRIC MATERIAL, PIEZOELECTRIC ELEMENT, AND ELECTRONIC EQUIPMENT - There is provided a lead- and potassium-free piezoelectric material having a high piezoelectric constant and a satisfactory insulation property and a piezoelectric element that includes the piezoelectric material. The piezoelectric material contains a perovskite-type metal oxide having the general formula (1): (Na | 12-24-2015 |
| 20150372221 | LEAD-FREE PIEZOELECTRIC MATERIAL - A lead-free piezoelectric ceramic material has the general chemical formula xBiCoO3-y(Bi0.5Na0.5)TiO3-z(Bi0.5K0.5)TiO3, xBiCoO3-y(Bi0.5Na0.5)TiO3-zNaN-bO3, xBiCoO3-y(Bi0.5Na0.5)TiO3-zKNbO3, xBiCoO3-yBi(Mg0.5Ti0.5)O3-z(Bi0.5Na0.5)TiO3, xBiCoO3-yBa-TiO3-z(Bi0.5Na0.5)TiO3, or xBiCoO3-yNaNbO3-zKNbO3; wherein x+y+z=1, and x, y, z≠0. | 12-24-2015 |
| 20160020380 | PIEZOELECTRIC POLYMER COMPOSITE MATERIAL - A piezoelectric polymer composite material includes piezoelectric particles dispersed in a matrix made from a polymer material. The piezoelectric particles is composed primarily of lead zirconate titanate having a general formula of Pb(Zr | 01-21-2016 |
| 20160064644 | PIEZOELECTRIC COMPOSITION AND PIEZOELECTRIC DEVICE - The present invention aims to provide a piezoelectric composition which is free of lead based compounds and is represented by the following formula (1), (Bi | 03-03-2016 |
| 20160099463 | COMPOSITE NEGATIVE ACTIVE MATERIAL AND METHOD OF PREPARING THE SAME, NEGATIVE ELECTRODE INCLUDING COMPOSITE NEGATIVE ACTIVE MATERIAL, AND LITHIUM SECONDARY BATTERY INCLUDING NEGATIVE ELECTRODE - A composite negative active material including a piezoelectric material; and a negative active material. Also a negative electrode including the composite negative active material, and a lithium secondary battery including the negative electrode. | 04-07-2016 |
| 20160104832 | PIEZOELECTRIC CERAMIC COMPOSITION - A piezoelectric ceramic composition contains a perovskite composition which is represented by (Pba.Rex){Zr | 04-14-2016 |
| 20160111277 | COMPOSITION FOR FORMING FERROELECTRIC THIN FILM, AND METHOD FOR MANUFACTURING SAME - A composition containing a precursor of a ferroelectric thin film, a solvent, and a reaction control substance, can form a ferroelectric thin film by temporary firing and permanent firing of a coating film. The composition contains the reaction control substance in such an amount that a Young's modulus of a film formed in a step of temporary firing at a temperature of 200° C. to 300° C. becomes equal to or less than 42 GPa, and a Young's modulus of a film formed in a step of permanent firing at a temperature of 400° C. to 500° C. becomes equal to or greater than 55 GPa. Thus a thin film having high crystallinity can be formed which substantially does not crack at the time of permanent firing even if the thickness of the coating film formed per single coating operation is increased. | 04-21-2016 |
| 20160181506 | PIEZOELECTRIC NANOPARTICLE-POLYMER COMPOSITE STRUCTURE | 06-23-2016 |
| 20160190430 | PIEZOCERAMIC MATERIAL WITH REDUCED LEAD CONTENT - The invention relates to a piezoceramic material with reduced lead content, based on potassium sodium niobate (PSN) and having a defined parent composition. According to the invention the manner of addition of a mixture of Pb, Nb and optionally Ag and optionally Mn gives a wide sintering range together with reproducible electrical and mechanical properties of the material. | 06-30-2016 |
| 20160251773 | CRYSTAL GROWTH SYSTEM AND METHOD FOR LEAD-CONTAINED COMPOSITIONS USING BATCH AUTO-FEEDING | 09-01-2016 |
| 20170236994 | PRECURSOR SOLUTION AND METHOD FOR THE PREPARATION OF A LEAD-FREE PIEZOELECTRIC MATERIAL | 08-17-2017 |
