20090053131 | MAGNESIUM OXIDE SINGLE CRYSTAL AND METHOD FOR PRODUCING THE SAME - Provided is a MgO single crystal for obtaining a magnesium oxide (MgO) single crystal deposition material which is prevented from splashing during the vapor deposition in, e.g., an electron beam deposition method without reducing the deposition rate, and for obtaining a MgO single crystal substrate which can form thereon, e.g., a superconductor thin film having excellent superconducting properties. A MgO single crystal having a calcium content of 150×10 | 02-26-2009 |