| Original Articles |
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ZERO RESISTANCE ABOVE 90K IN SUPERCONDUCTING OXIDE Tm-Ba-Cu-O |
| ZHANG Qirui;QIAN Yitai;CHEN Zuyao;GUAN Weiyan;ZHAO Yong,
PAN Guoqiang;CAO Liezhao;XIA Jiansheng;ZHANG Han;HE Zhenghui;YU Daoqi;ZHANG Minjian;SUN Shifang;FANG Minhu;ZHANG Tao
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| Department of Physics, University of Science and Technology of China, Hefei |
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| Cite this article: |
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ZHANG Qirui, QIAN Yitai, CHEN Zuyao et al 1987 Chin. Phys. Lett. 4 493-496 |
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Abstract Superconducting transition has been observed by electrical resistance and a.c. magnetic susceptibility measurements in TmxBa1-xCuO3-y with x=0.6 and 0.7 and y>0. The highest Tc of the samples measured is observed in Tm0.6- Ba0.4CuO3-y which has the Tc(mid)=91K with ΔTc=0.5K, and Tc(ρ=0)=90.1K. The a. c . magnetic susceptibility measurements show a very strong diamagnetism at the temperature of resistive midpoint.
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Published: 01 November 1987
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