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Flux pinning in superconducting amorphous Zr1−x Co x

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Abstract

The pinning force FP in amorphous Zr1−x Co x (x=0.30; 0.35) is measured as a function of perpendicular field and temperature. The homogeneous samples exhibit a weak flux pinning force of about 104 N/m 3 in the temperature range 2–3 K. The field dependence ofF P at several temperatures can be explained by a collective pinning model in the Larkin-Ovchinnikov theory in three dimensions. Structural relaxation studies in amorphous ZrCo confirm that bothT c andF P are sensitive to a slight isothermal annealing treatment at 220°C for 1 h. The collective flux-pinning characteristics still remain after such a structural relaxation, which allows us to conjecture that these defects are stable against this thermal treatment.

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Authors and Affiliations

  1. Department of Physics, Harbin University of Science and Technology, Harbin, China

    Yan-Fei Li

  2. Department of Solid State Physics, The Royal Institute of Technology, S-100 44, Stockholm, Sweden

    Ö. Rapp

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  1. Yan-Fei Li
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  2. Ö. Rapp
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Li, YF., Rapp, Ö. Flux pinning in superconducting amorphous Zr1−x Co x . J Low Temp Phys 72, 381–389 (1988). https://doi.org/10.1007/BF00682149

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  • DOI: https://doi.org/10.1007/BF00682149

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