| 摘要 |
An artificial corundum crystal which can be put into practical use at low costs, and a process for producing the same. The artificial corundum crystal contains a seed crystal and has at least one crystal face selected from a { 113 } face, a { 012 } face, a { 104 } face, a { 110 } face, a { 101 } face, a { 116 } face, a { 211 } face, a { 122 } face, a { 214 } face, a { 100 } face, a { 125 } face, a { 223 } face, a { 131 } face, and a { 312 } face. The process for producing the artificial corundum crystal an artificial corundum crystal having a hexagonally dipyramidal includes forming with a seed crystal by a flux evaporation method of heating a sample containing a raw material and a flux to precipitate a crystal and grow the crystal by use of flux evaporation as a driving force.
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