Effect of Barium Doping on High-T_c Superconductor Pb_2Sr_2Y_<0.5>Ca_<0.5>Cu_3O_y
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概要
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The effect of replacement of the Sr ions by Ba or Ca ions has been studied in the high-T_c superconductor Pb_2Sr_2Y_<0.5>Ca_<0.5>Cu_3O_y. With increasing the amount of Ba, the lattice expands and Pb_2SrBaY_<0.5>Ca_<0.5>Cu_3O_y shows an orthorhombic-to-tetragonal transition. A superconducting transition has been observed in the sample of the nominal composition Pb_2SrBaY_<0.5>Ca_<0.5>Cu_30_y. Magnetization measurements have shown that the superconducting transition is not of bulk nature. The doping of Ca ions has been unfavorable for the formation of the Pb_2Sr_2YCu_3O_8 -type phase.
- 島根大学の論文
著者
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Fujita Toshizo
Department Of Quantum Matter Adsm Hiroshima University
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Fujita Toshizo
Department Of Physics Faculty Of Science Hiroshima University
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Fujita Toshizo
Department Of Physics Faculty Of Faculty Of Science Hiroshima University
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TAGUCHI Isao
島根医科大学
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