Process for growing a large single crystal from multiple seed crystals
US4578146A · kind A · utility
8Cited by
3References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 28, 1983 |
| Grant date | Mar 25, 1986 |
| Priority date | — |
| Expiry date | Apr 28, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S117/90
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A large single crystal of metal orthophosphate is grown from a plurality of seed crystals by first mounting the seed crystals with one planar surface of each seed crystal substantially in contact with a planar surface of an adjoining seed crystal and a second planar surface substantially parallel to a second planar surface of the adjoining seed crystal. By known methods, the seeds are then grown into a large single crystal in an acid medium at elevated temperatures. The process is particularly useful for growing large crystals of berlinite, which can then be cut into wafers useful in surface acoustic wave devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.