Patent ID: 7691765
Filing Date: 2010-04-06
Classification: C01F,C01P,C04B,H01L

Abstract:
1. A translucent material that is a ceramic sintered body, characterized in that the micro-structure constituting said ceramic sintered body comprises a particle phase consisting of a plurality of particles of a single composition with a monocrystal structure of a uniform size and a uniform shape; and a grain boundary phase that is produced at boundary surfaces where said particles contact each other, wherein said grain boundary phase comprises at least one type or more selected from the group consisting of yttrium oxide, aluminum oxide, yttrium-silicon complex oxide, aluminum-silicon complex oxide, and a compound having a garnet structure with a lower melting point than said particle; wherein said plurality of particles comprise any of a cube, a truncated octahedron, or a diamond dodecahedron; and wherein the crystal structure of said plurality of particles is any of a garnet structure, C-rare earth structure, A