Accession Number : ADD006407

Title :   Method of Growing Single Crystals.

Descriptive Note : Patent Application,


Personal Author(s) : Aucoin ,Thomas R ; Schwartz ,Abraham ; Wade ,Melvin J ; Malik,Roger J

Report Date : 09 Jun 1979

Pagination or Media Count : 7

Abstract : The general object of this invention is to provide a method of growing single crystals of Berlinite. A further object is to provide such a method wherein the single crystals grown will be of large size, high purity and exceptional quality. A still furthur object of the invention is to provide such a method wherein the resulting crystals can be used as temperature compensated piezoelectric material in applications such as resonators for oscillators and filters, delay lines and frequency filters for correlation, pulse compression, and matched filtering. The foregoing objects now have been attained by growing single crystals of alpha aluminum phosphate from seeded solutions of aluminum orthophosphate and orthophosphoric acid in such a manner as to provide direct visual observation of the crystal growth process and allow precise determination of nucleation and growth kinetics.

Descriptors :   *Patent applications, *Crystal growth, *Single crystals, *Piezoelectric crystals, Aluminum compounds, Phosphates, Phosphoric acids

Subject Categories : Crystallography

Distribution Statement : APPROVED FOR PUBLIC RELEASE