作者: Yasushi Idemoto , Yooko Yasuda , Kazuo Fueki
DOI: 10.1016/0921-4534(94)02377-8
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摘要: Abstract The standard enthalpy of formation Δ f H 0 , La 2− x M M′Cu 2 O y (M, M′Sr, Ca) solid solution was determined by the calorimetric method. change reaction ΔH LSSCO and LCCCO from simple oxides, were calculated as a function . exhibited remarkable dependence on whereas its LSCCO small. A correlation found between heat − copper valence. These findings interpreted in terms preference Sr Ca to 2a sites.