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Superconducting properties of the lithium-substituted YBa2Cu4O8 prepared by the sol-gel method

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Abstract

The effects of the lithium substitution for copper on the properties of the superconducting YBa2Cu4O8 were studied. Single-phase YBa2Cu4−xLixO8 was successfully prepared by the sol-gel method under ambient pressure over a composition range of 0⩽x⩽ 0.08, while impurity phases appeared at x=0.10 and 0.20. The lattice constants of YBa2Cu4−xLixO8 were almost invariant with increasing lithium content x. The superconducting transition temperature decreased monotonically with increasing x in the range, 0⩽x⩽0.08. The suppression of superconductivity was discussed in terms of the impurity effect in the CuO2 planes.

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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

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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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Fujihara, S., Kozuka, H. & Yoko, T. Superconducting properties of the lithium-substituted YBa2Cu4O8 prepared by the sol-gel method. JOURNAL OF MATERIALS SCIENCE 31, 2975–2979 (1996). https://doi.org/10.1007/BF00356011

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