Pressure Effects on Resistive Transition in (Cu,M)Ba2Ca3Cu4Oy (M=C,Al,Tl,Mg,Zn) Superconductors |
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| Authors: | K. Tokiwa C. Kunugi H. Kashiwagi T. Nibe H. Aota N. Ichioka T. Watanabe A. Iyo Y. Tanaka S.K. Agarwal H. Ihara |
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| Affiliation: | (1) Department of Applied Electronics, Science University of Tokyo, Noda, Chiba, 278, Japan;(2) Electrotechnical Laboratory, Tsukuba, Ibaraki, 305, Japan;(3) National Physical Laboratory, Dr. K.S. Krishnan Road, New Delhi, 110012, India |
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| Abstract: | Single phase samples with the composition of (Cu, M)Ba2Ca3Cu4Oy(CuM-1234; M=C,Al,Tl,Mg,Zn) have been synthesized using high pressure technique. We have measured the pressure dependence of superconducting transition temperature (Tc) through insitu resistivity measurements up to 8 GPa for these samples, reproducibly. These samples indicated almost the same Tc-enhancement by applied pressure, in spite of their different ambient Tcvalues. The enhancement values of 8-10 K at 8 GPa pressure for these samples are found to be comparable to those of Hg-system and (B,C)-system. |
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