Process for growing a large single crystal from multiple seed cr

Details Process for growing a large single crystal from multiple seed cr Process for growing a large single crystal from multiple seed cr

1983-04-28

1986-03-25

Bernstein, Hiram H.

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

156DIG65, C30B 710

Patent

active

045781460

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.

REFERENCES:
patent: 4381214 (1984-04-01), Christie et al.
patent: 4382840 (1983-05-01), Chai et al.
patent: 4469160 (1984-09-01), Giamei
I. R. A. Christie et al., Acta Crystallogr., Sect. A, Suppl. to V. A37, C-142, (1981), "The Fabrication by Joining of Long Seeds for the Growth of Large Synthetic Quartz Crystals".

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