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Hexagonal II-VI Structures by Substrate Bandgap Engineering

Brian Fitzpatrick

出版	Optical semiconductors Incorporated peekskill ny, 1997
URL	http://books.google.com.hk/books?id=9FmC0AEACAAJ&hl=&source=gbs_api

註釋

A synthesis procedure was developed for bulk ZnMgSSe, using metallic Mg and Se. This is done in the growth crucible in the growth system; this reduces contamination from exposure to the laboratory ambient. A growth run with 12% Mg and 8% S (nominal) concentrations was done using our zone melting technique in a non-seeding crucible. A 45 deg cross-section was made by cleaving; it appeared that one grain was about half of the 26 mm (average) diameter boule. No twins were visible at all. It is, of course, desirable to have twin-free material, but, even more importantly, the lack of twins is a strong indication of hexagonal material, a major goal of the program.