发明名称 |
SINGLE CRYSTAL OF NITRIDE CONTAINING METAL ELEMENT OF GROUP III OR IV AND METHOD FOR PREPARING THE SAME |
摘要 |
beta -ZrNCl polycrystalline powder prepared by chemical transport method and NH4Cl are mixed in a molar ratio of 1:2. The mixture is encapsulated in a Au capsule (6 mm in inner diameter and 6 mm in depth) of a reaction vessel 2, which is then enclosed in a highly heat-conductivitive sodium chloride block as an electrically insulating pressure medium 6. The mixture held in the sodium chloride block is placed in a carbon tube 8 for serving as a heater. In a cubic-pressing apparatus using a pyrophyllite 12 as a pressure-transmitting medium, the mixture is heated at 900 DEG C for 2 hours under an applied pressure of 3 GPa. After the mixture is allowed to stand until it is cooled down to room temperature, the Au capsule is taken out and light green beta -ZrNCl single crystals are obtained. A large single crystal among them had a hexagonal plate-like habit and is transparent with dimensions about 2 mm in diameter, and 0.3 mm in thickness. <IMAGE>
|
申请公布号 |
EP1333112(A1) |
申请公布日期 |
2003.08.06 |
申请号 |
EP20010974783 |
申请日期 |
2001.10.11 |
申请人 |
JAPAN SCIENCE AND TECHNOLOGY CORPORATION |
发明人 |
YAMANAKA, SHOJI;CHEN, XUEAN;CHEN XUEAN |
分类号 |
B01J3/06;(IPC1-7):C30B29/38;C30B1/02 |
主分类号 |
B01J3/06 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|