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Pressure Effects on Resistive Transition in (Cu,M)Ba2Ca3Cu4Oy (M=C,Al,Tl,Mg,Zn) Superconductors

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Abstract

Single phase samples with the composition of (Cu, M)Ba 2 Ca 3 Cu 4 O y (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 (T c ) through insitu resistivity measurements up to 8 GPa for these samples, reproducibly. These samples indicated almost the same T c -enhancement by applied pressure, in spite of their different ambient T c values. 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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Authors and Affiliations

  1. Department of Applied Electronics, Science University of Tokyo, Noda, Chiba, 278, Japan

    K. Tokiwa, C. Kunugi, H. Kashiwagi, T. Nibe, H. Aota, N. Ichioka, T. Watanabe, Y. Tanaka & S.K. Agarwal

  2. Electrotechnical Laboratory, Tsukuba, Ibaraki, 305, Japan

    A. Iyo & H. Ihara

  3. National Physical Laboratory, Dr. K.S. Krishnan Road, New Delhi, 110012, India

    S.K. Agarwal

Authors
  1. K. Tokiwa
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  2. C. Kunugi
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  3. H. Kashiwagi
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  4. T. Nibe
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  5. H. Aota
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  6. N. Ichioka
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  7. T. Watanabe
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  8. A. Iyo
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  9. Y. Tanaka
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  10. S.K. Agarwal
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  11. H. Ihara
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Tokiwa, K., Kunugi, C., Kashiwagi, H. et al. Pressure Effects on Resistive Transition in (Cu,M)Ba2Ca3Cu4Oy (M=C,Al,Tl,Mg,Zn) Superconductors. Journal of Low Temperature Physics 117, 903–907 (1999). https://doi.org/10.1023/A:1022502908121

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  • DOI: https://doi.org/10.1023/A:1022502908121

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