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On the growth of Hg2Cl(1–x)2Brx2 single crystals

Published online by Cambridge University Press:  31 January 2011

N.B. Singh ,
E.P.A. Metz ,
A. Stewart ,
M. Gottlieb ,
R. Hopkins ,
R. Mazelsky ,
M.E. Glicksman  and
T.E. Haley
N.B. Singh
Affiliation:
Westinghouse Science and Technology Center, 1310 Beulah Road, Pittsburgh, Pennsylvania 15235
E.P.A. Metz
Affiliation:
Westinghouse Science and Technology Center, 1310 Beulah Road, Pittsburgh, Pennsylvania 15235
A. Stewart
Affiliation:
Westinghouse Science and Technology Center, 1310 Beulah Road, Pittsburgh, Pennsylvania 15235
M. Gottlieb
Affiliation:
Westinghouse Science and Technology Center, 1310 Beulah Road, Pittsburgh, Pennsylvania 15235
R. Hopkins
Affiliation:
Westinghouse Science and Technology Center, 1310 Beulah Road, Pittsburgh, Pennsylvania 15235
R. Mazelsky
Affiliation:
Westinghouse Science and Technology Center, 1310 Beulah Road, Pittsburgh, Pennsylvania 15235
M.E. Glicksman
Affiliation:
Materials Science and Engineering Department, Rensselaer Polytechnic Institute, Troy, New York 12180
T.E. Haley
Affiliation:
Westinghouse Space Division, ESG, Baltimore, Maryland 21108
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Abstract

Single crystals of mixed mercurous halides Hg2X2 (where X = Cl and Br) were grown by the physical vapor transport process. Structural parameters and optical properties were determined to examine the suitability of mixed crystals for acousto-optic devices. Mixed crystals grown in the low concentration region did not show striations or banding. Crystals grown in the high concentration region showed considerable inhomogeneity in the refractive index. Since we had used identical thermal conditions, inhomogeneity was attributed to the solutal convection caused by the difference in densities of mercurous chloride and bromide vapors. A low concentration of dopant did not change the acoustic velocity of the parent components.

Type
Articles
Information
Journal of Materials Research , Volume 7 , Issue 9 , September 1992 , pp. 2507 - 2510
Copyright
Copyright © Materials Research Society 1992

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References

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