发明名称 |
Method of producing a single crystal of a rare-earth silicate |
摘要 |
A method of growing a single crystal of a rare-earth silicate is disclosed which comprises heating raw materials in a crucible to thereby obtain a melt of the raw materials, contacting a lower end of a seed crystal with the melt and pulling the seed crystal to thereby grow a single crystal, and wherein the pulling is conducted along an axis of pulling having a gradient of at least 30 DEG from the b-axis ([010] axis) of the single crystal and a gradient of at least 25 DEG from the c-axis ([001] axis) of the single crystal. The invention also provides a method of machining a single crystal of a rare-earth silicate into a cylindrical form, comprising grinding a cylinder whose axis is directed so as to have a gradient of 0 DEG to 65 DEG from the c-axis ([001] axis) of the single crystal. Further, the invention provides a single crystal of a rare-earth silicate machined into a configuration having at least one plane, wherein the plane most close to the (100) plane of the single crystal has a gradient of at least 5 DEG from the (100) plane.
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申请公布号 |
US5667583(A) |
申请公布日期 |
1997.09.16 |
申请号 |
US19950413287 |
申请日期 |
1995.03.30 |
申请人 |
HITACHI CHEMICAL CO. LTD. |
发明人 |
KURATA, YASUSHI;KURASHIGE, KAZUHISA;ISHIBASHI, HIROYUKI |
分类号 |
C30B15/00;C30B33/00;(IPC1-7):C30B15/36 |
主分类号 |
C30B15/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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