Exchange Strictions of Calcogen Spinels CuCr_2X_4 (X=S, Se and Te)
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概要
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The temperature dependence of the lattice constants of CuCr_2X_4 (X=S, Se and Te) was determined in a temperature range from 100 to 700 K by an X-ray diffraction technique. The specific heat of CuCr_2Se_4 was also measured. The temperature dependence of the exchange strictions of CuCr_2X_4 (X=S, Se and Te) was estimated from these results. Based on the molecular field theory proposed by Bean and Radbell, we estimated the pressure coefficients of the Curie temperature to be -1.1×10^<-3>, -0.4×10^<-3> and 0 deg. cm^2/kg for CuCr_2S_4 CuCr_2Se_4 and CuCr_2Te_4, respectively, which were in agreement with the values obtained by direct measurements.
- 社団法人日本物理学会の論文
- 1974-05-15
著者
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Ido Hideaki
Faculty Of Technology Tohoku Gakuin University
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Kanomata Takeshi
Faculty Of Engineering Tohoku Gakuin University
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Kanomata Takeshi
Faculty Of Technology Tohoku Gakuin University
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