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Synthesis of High Temperature Superconductors HgBa2CuO4+y and HgBa2Ca2Cu3O8+y |
YAO Yushu;SU Yanjing*;JIA Shunlian;CAO Guohui*;WU Fei;ZHAO Zhongxian |
National Laboratory for Superconductivity, Institute of Physics, Academia Sinica, Beijing 100080
*Department of Materials Physics, University of Sciences and Technology of Beijing, Beijing 100083
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Cite this article: |
YAO Yushu, SU Yanjing, JIA Shunlian et al 1994 Chin. Phys. Lett. 11 304-306 |
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Abstract High critical temperature superconductors of mercury- based system were synthesized under high pressure and high temperature. The resistance and ac magnetic susceptibility measurements for sample prepared at 25 kbar and 850°C for 1.5 h show that the sample without any added treatment was a mixture of Hg-1201 and Hg-1223. The Tc values of Hg-1223 phase and Hg-1201 phase are 132 and 98 K, respectively.
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Keywords:
74.70.Jm
62.50.+p
74.30.Ci
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Published: 01 May 1994
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