Long Range Ordering of Interstitial Oxygen in Vanadium near V_4O
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概要
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The crystal structure of interstitial solid solutions of vanadium with 14-23 at% oxygen has been determined by X-ray and electron diffraction. It is shown that the oxygen atoms occupy regularly the octahedral interstitial sites, forming a body-centered tetragonal superlattice of which the stoichiometry is approximately V_<16>O_3. The unit cell contains a 4×4×2 array of b.c.t. metal subcells with the axial ratio larger than unity. Both the cell dimensions of superlattice and sublattice increase considerably with the increase of oxygen concentration. The superstructure is formed below 400℃ and transforms to another b.c.t. structure with preferential occupation of oxygen atoms like the Fe-C martensite above that temperature.
- 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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Hiraga Kenji
The Research Institute For Iron Steel And Other Metals
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Hirabayashi Makoto
The Research Institute For Iron Steel And Other Metals
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