Comparison of flux pinning in supercondu
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Masao Nakao; Kenichi Kawaguchi; Hiroaki Furukawa; Kazuaki Shikichi; Yuh Matsuta
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Article
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1989
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Elsevier Science
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English
⚖ 121 KB
We report direct observation of the flux pinning behavior of a TltCa2Ba2Cu30, highly oriented thin film, a randomly oriented polycrystalline thin film and a Tl~CaBa,eu20, single crystal. From the temperature dependence of the critical current densities Jc at zero field, activation energies Uo are es