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High-Pressure X-Ray Diffraction Studies of Elastic Anomalies in Superlattice

Published online by Cambridge University Press:  26 February 2011

Y. Fujii ,
Y. Ohishi ,
H. Konishi ,
N. Nakayama  and
T. Shinjo
Y. Fujii
Affiliation:
Univ. of Tsukuba, Inst. of Mat. Sci., Tsukuba 305, Japan
Y. Ohishi
Affiliation:
Sumitomo Chem. Ind., Tsukuba 300–32, Japan
H. Konishi
Affiliation:
Jpn. Atomic Energy Res. Inst., Tokai 319–11, Japan
N. Nakayama
Affiliation:
Kyoto Univ., Dept. of Chem., Kyoto 606, Japan
T. Shinjo
Affiliation:
Kyoto Univ., Inst. of Chem. Res., Uji 611, Japan
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Abstract

This paper has made an overview on elastic and structural aspects of three distinct superlattices under hydrostatic pressure up to about 8GPa, which were studied by our unique x-ray diffraction technique incorporated with a diamond-anvil cell. They are metallic fcc/fcc Au/Ni, bcc/fcc Mo/Ni, and semiconductive epitaxially-grown PbSe/SnSe superlattices. In their layer-stacking direction, both metallic superlattices show the supermodulus behavior while the semiconductive one doesn't. However, its pressure-driven cubic-to-orthorhombic phase transition, successively taking place in the SnSe and PbSe layers, has been found to significantly shift by stress due to its epitaxial growth.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 231: Symposium S – Magnetic Surfaces, Thin Films and Multilayers , 1991 , 355
Copyright
Copyright © Materials Research Society 1992

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