Structure Analysis of Sr_2Nb_2O_7(010)Surface by X-ray CTR Scattering : Condensed Matter: Structure, etc.
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概要
- 論文の詳細を見る
We have investigated the surface structure of a ferroelectric substance Sr_2Nb_2O_7 in air after cleaving the (010) surface. For this purpose, we examined X-ray crystal truncation rod (CTR) scattering and X-ray reflectivity (XR) at several different temperatures, which yielded the cleaved position unambiguously. After a thermal annealing in air, the cleaved surface were found to be flat on an atomic level, and showed a distinct relaxation where the top Sr cations are pulled to the bulk. Although the strong contraction was indicated, the probability of finding the Sr atom on the Sr-site at the surface was less than 40%. Such an unexpected low Sr-residuary can be accounted for by a condition of the charge-neutralization at the polar (010) surface.
- 社団法人日本物理学会の論文
- 2000-10-15
著者
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TAKAHASHI Isao
Nishinihon Institute of Technology
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Ohi Kikuo
School Of Science And Engineering Waseda University
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Doi Shuichi
Advanced Research Center Of Science(arcs) Kwansei Gakuin University
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TAKAHASHI Isao
Advanced Research Center of Science, Faculty of Science and Technology, Kwansei Gakuin University
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Takahashi I
Nishinihon Institute Of Technology
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SUETOSHI Ryoichi
Advanced Research Center of Science(ARCS), Kwansei Gakuin University
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Suetoshi Ryoichi
Advanced Research Center Of Science(arcs) Kwansei Gakuin University
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