Observation of a reentrant superconducting resistive transition in granular Ba<math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi mathvariant="normal">Pb</mi></mrow><mrow><mn>0.75</mn></mrow></msub></mrow></math><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi mathvariant="normal">Bi</mi></mrow><mrow><mn>0.25</mn></mrow></msub></mrow></math><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi mathvariant="normal">O</mi></mrow><mrow><mn>3</mn></mrow></msub></mrow></math> superconductor

T. H. Lin; X. Y. Shao; M. K. Wu; P. H. Hor; X. C. Jin; C. W. Chu; N. Evans; R. Bayuzick

doi:10.1103/PhysRevB.29.1493

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Observation of a reentrant superconducting resistive transition in granular Ba ${Pb}_{0.75}$ ${Bi}_{0.25}$ $O_{3}$ superconductor

T. H. Lin, X. Y. Shao, M. K. Wu, P. H. Hor, X. C. Jin, C. W. Chu, N. Evans, and R. Bayuzick

Phys. Rev. B 29, 1493(R) – Published 1 February 1984

Abstract

A normal-superconducting-normal transition has been observed resistively in the granular Ba ${Pb}_{0.75}$ ${Bi}_{0.25}$ $O_{3}$ compound, while the compound remains diamagnetic to the lowest temperature investigated. This has been attributed to the decoupling of the superconducting grains at low temperature caused by the reduction of charge carriers in the grain barriers, in good agreement with the theory.

Received 14 November 1983

DOI:https://doi.org/10.1103/PhysRevB.29.1493

Authors & Affiliations

T. H. Lin, X. Y. Shao^*, M. K. Wu, P. H. Hor, X. C. Jin^†, and C. W. Chu

Department of Physics and Energy Laboratory, University of Houston, Houston, Texas 77004

N. Evans and R. Bayuzick

Department of Mechanical Engineering and Material Science, Vanderbilt University, Nashville, Tennessee 37235

^*On leave from the Physics Institute, Chinese Academy of Sciences, Beijing, China.
^†On leave from the Physics Department, Nanjing Institute of Chemical Technology, Nanjing, China.

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Vol. 29, Iss. 3 — 1 February 1984

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