Zero resistance at 117 K in Bi1.6Pb0.4Sr2Ca2Cu2+xOy compounds |
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| Authors: | Mao Zhiqiang Liu Hongbao Zhou Ling Zhang Weijie Mao Jian Xue Bai Li Biyou Lu Jiang Cao Liezhao Ruan Yaozhong Chen Zhaojia and Zhang Yuheng |
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| Affiliation: | (1) Department of Physics, University of Science and Technology of China, Hefei, Anhui, China |
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| Abstract: | In the Pb-doped Bi-Sr-Ca-Cu-O system, optimization of the composition and heat treatment conditions at which a greater amount of the high-T
c
phase forms has been reported in our early paper 1], where the temperature of zero resistance was 107K. Recently, we have achieved zero resistance at 117 K and observed an a.c. susceptibility step at around 150 K by changing the Cu composition in the Bi1.6Pb0.4Sr2Ca2Cu2+x
O
y
system (x=0, 0.4, 0.8, 1.2, and 1.6). |
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| Keywords: | superconductivity Bi1 6Pb0 4Sr2Ca2Cu2+x
O
y
microstructure |
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