Lattice Modulation in the Ordered Alloys with Long Period Studied by X-Ray Diffraction. I : Au_3Cd
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概要
- 論文の詳細を見る
Au_3Cd which is an ordered alloy with the one-dimensional regular anti-phase domain structure exhibits an asymmetry in intensity of components of each pair of split superlattice reflections in X-ray single crystal diffraction patterns, the splitting being caused by the presence of the periodic anti-phase domains. The nature of lattice modulation revealed by this intensity asymmetry has been investigated in detail. Fourier synthesis has been made using (h0l) type reflections and the crystal structure has been refined taking into account the information obtained from the synthesis. The result shows that the modulation is nothing but the periodic displacements of atoms from the normal positions, gold atoms being displaced away from the anti-phase domain boundaries by 0.015±0.005A and cadmium ones being displaced in the opposite directions by 0.028±0.005A. This type of lattice modulation seems not to contradict the idea suggested by Sato and Toth that the ordered alloys with long period are stabilized by the contact of Fermi surface with Brillouin zone boundaries.
- 東北大学の論文
著者
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HIRABAYASHI Makoto
The Research Institute for Iron,Steel and Other Metals,Tohoku University
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Iwasaki Hiroshi
The Research Institute For Iron Steel And Other Metals Tohoku University
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Ogawa Shiro
The Research Institute For Iron Steel And Other Metals
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Ogawa Shiro
The Rcsearch Institute For Iron Steel And Other Metals Tohoku University
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Hirabayashi Makoto
The Research Institute For Iron Steel And Other Metals Tohoku University
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Hirabayashi Makoto
The Research Institute For Iron Steel And Other Metals
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Iwasaki Hiroshi
The Research Instisuse For Iron Steel And Other Metals Tohoku University
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