Effect of Pressure on the Ordered Structure and Phase Transition of the CuAu Alloy
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概要
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Effect of pressure on the CuAu alloy having a long period ordered structure has been studied using mainly a tetrahedral-anvil type press. The alloy was annealed at various temperatures ranging from 350℃ to 500℃ during application of pressure. After temperature and pressure were reduced to ambient ones, the structure formed in the alloy during compression and retained to atmospheric pressure was studied by a usual X-ray diffraction method. The maximum pressure applied was 70 kbar. It has been observed that pressure increases the order-disorder transition temperature at an initial rate of 1.5±0.2 deg/kbar. The long period of the CuAuII structure formed under compression has been observed to increase with increasing pressure. Under the pressure higher than 50kbar the CuAuII structure becomes unstable and the only ordered structure formed is CuAuI. The results obtained are discussed by taking into account s distortion of the Fermi surface of the alloy induced by pressure.
- 社団法人日本物理学会の論文
- 1974-04-15
著者
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Ogawa Shiro
The Rcsearch Institute For Iron Steel And Other Metals Tohoku University
-
Iwasaki Hiroshi
The Research Instisuse For Iron Steel And Other Metals Tohoku University
-
Yoshida Hajime
The Research Insititute for Iron, Steel and Other Metals
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