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Superconductivity of La2−xSrxCuO4 with high strontium concentration by sulphur doping

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Abstract

The effects of sulphur substitution for oxygen on the structure and properties of nonsuperconducting La2−xSrxCuO4, where x=0.26 and 0.30, have been studied. In La2−xSrxCuO 4−y-Sy, the sulphur-doped samples exhibit superconducting transition at 37–39 K and a larger Meissner effect than undoped samples. It was found that the superconductivity of La2−xSrxCuO4−ySy is apparently determined by the value of x−y and the strontium concentration region in which La2−xSrxCuO4 shows superconductivity shifts to higher strontium concentrations with sulphur doping.

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Authors and Affiliations

  1. Institute for Chemical Research, Kyoto University, Uji, 611, Kyoto-Fu, Japan

    S. Fujihara, H. Kozuka, T. Yoko & S. Sakka

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  1. S. Fujihara
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  2. H. Kozuka
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  3. T. Yoko
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  4. S. Sakka
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Fujihara, S., Kozuka, H., Yoko, T. et al. Superconductivity of La2−xSrxCuO4 with high strontium concentration by sulphur doping. JOURNAL OF MATERIALS SCIENCE 28, 3874–3878 (1993). https://doi.org/10.1007/BF00353194

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  • DOI: https://doi.org/10.1007/BF00353194

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