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The growth and properties of large crystals of synthetic quartz

Published online by Cambridge University Press:  14 March 2018

C. S. Brown ,
R. C. Kell ,
L. A. Thomas ,
Nora Wooster  and
W. A. Wooster
C. S. Brown
Affiliation:
Research Laboratories of The General Electric Company, Limited, Wembley
R. C. Kell
Affiliation:
Research Laboratories of The General Electric Company, Limited, Wembley
L. A. Thomas
Affiliation:
Research Laboratories of The General Electric Company, Limited, Wembley
Nora Wooster
Affiliation:
Brooklyn Crystallographic Laboratory, Cambridge
W. A. Wooster
Affiliation:
Brooklyn Crystallographic Laboratory, Cambridge
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Extract

In the last twenty years quartz has become of considerable importance to the telecommunications industry, one of its most important uses being the control of the frequency of oscillation of high-frequency transmitters. In this country alone the peak war-time demand for oscillator crystals was well over a million a year.

Although quartz is very abundant in the earth's crust it is usually found in the polycrystalline state or as small crystals. Large crystals, reasonably free from twinning and flaws, are relatively rare and most of the supply for piezoelectric purposes comes from Brazil.

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 29 , Issue 217 , June 1952 , pp. 858 - 874
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1952

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