Method of producing single crystals and a seed crystal used in the method
US5944890A · kind A · utility
43Cited by
9References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 28, 1997 |
| Grant date | Aug 31, 1999 |
| Priority date | — |
| Expiry date | Mar 28, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC30B29/36
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
In a method of producing single crystals on a seed crystal, the seed crystal is covered by a protection layer except for a surface on which the single crystals are to be formed. The protection layer is made of material such as carbon or the like, which is stable in a step of forming the single crystals. As a result, a temperature gradient and mass transfer in the seed crystal can be prevented, whereby quality of the single crystals formed on the seed crystal can be improved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.