Resistivity and Susceptibility of Y-Ba-Cu and Bi-Sr-Ca-Cu Oxides

Abstract

Abstract: The resistivity and magnetic susceptibility of the quenched samples for the Y-Ba-Cu oxides were measured at room temperature.The measurement for the temperature dependence of the amorphous Bi-Sr-Ca-Cu oxides with different heat treatment temperature was made.The resistivity and the parameters C in the formula x=X_0+C/(T-0)of the quenched samples for Y-Ba-Cu oxides decreased with lowering quench temperature,and their susceptibility did not vary monotonously with quench temperature.The tem- perature dependence of the amorphous Bi-Sr-Ca-Cu oxides gradually deviates from Curie-Weiss law with increasing heat treatment temperature.The local magnetic moments for Y-Ba-Cu and amorphous Bi-Sr-Ca-Cu oxides gradually decrease with decreasing quench tempera- ture or increasing heat treatment temperature.

Key words: superconductivity, Y-Ba-Cu oxide, magnetic property

WANG Yongzhong ZHU Naiping YAN Xueqin HAO Huiqing QIAO Guiwen Institute of Metal Research,Academia Sinica,Shenyang,110015,China.. Resistivity and Susceptibility of Y-Ba-Cu and Bi-Sr-Ca-Cu Oxides[J]. J Mater Sci Technol, 1990, 6(3): 215-218.

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Resistivity and Susceptibility of Y-Ba-Cu and Bi-Sr-Ca-Cu Oxides

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