Process for growing a large single crystal from multiple...

Details Process for growing a large single crystal from multiple... Process for growing a large single crystal from multiple...

C - Chemistry, Metallurgy

30

B

148/2.7

C30B 17/00 (2006.01) C30B 7/00 (2006.01)

Patent

CA 1223799

ABSTRACT PROCESS FOR GROWING A LARGE SINGLE CRYSTAL FROM MULTIPLE SEED CRYSTALS A large single crystal of metal orthophosphate is grown from a plurality of seed crystals by first mount- ing the seed crystals with one planar surface of each seed crystal substantially in contact with a planar sur- face of an adjoining seed crystal and a second planar surface substantially parallel to a second planar sur- face 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.

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