Modulated Structures and Atomic Ordering in InPySb1-y Layers Grown by Organometallic Vapor Phase Epitaxy
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概要
- 論文の詳細を見る
Modulated structure in organometallic vapour phase epitaxially grown InPSb(001) layers has been investigated using transmission electron microscopy (TEM) and transmission electron diffraction (TED). TEM results show that a fine scale modulated contrast (15–20 nm) and a fine scale speckled contrast (${\sim}5$ nm) are simultaneously present. In addition, a fine needle-like contrast (${\sim}1.5$–2.1 nm) is present. TED patterns show that $(\bar{1}11)$ and $(1\bar{1}1)$ CuPt-type ordered variants are present. Diffuse streaks along the [110] direction are also observed in the $[\bar{1}10]$ TED pattern and found to be associated with the needle-like contrast. A possible model involving segregation of atoms associated with rows of missing dimers in the surface reconstruction or the presence of antiphase boundaries (APBs) and domain boundaries in CuPt-type ordered regions present in the layers is suggested to explain the origin of the needle-like contrast.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2008-04-25
著者
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Seong Tae-yeon
Department Of Materials Science And Engineering And Centre For Electronic Materials Research Kwangju
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Seong Tae-Yeon
Department of Materials Science and Engineering, Korea University, Seoul 136-713, Korea
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Booker G.
Department of Materials, University of Oxford, Parks Road, Oxford OX1 3PH, U.K.
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Norman Andrew
National Renewable Energy Laboratory, 1617 Cole Boulevard, Golden, CO 80401-3393, U.S.A.
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Stringfellow Gerald
Department of Materials Science and Engineering, University of Utah, Salt Lake City, UT 84112, U.S.A.
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