Superconducting behaviour of Y0·8Ce0·1Ca0·1Ba2Cu4O8 : Philosophical Magazine B: Vol 71, No 6

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Abstract

The superconducting behaviour of Y_0·8Ce_0·1Ca_0·1Ba₂Cu₄O₈ synthesized under ambient oxygen pressure, is analysed in comparison to that of pure YBa₂Cu₄O₈, Y_0·9Ce_0·1Ba₂Cu₄O₈ and Y_0·9Ca_0·1Ba₂Cu₄O₈. It is observed that counter-substitution of Ca at Y sites in Y_0·9Ca_0·1Ba₂Cu₄O₈ does not restore the value of T _c to that of the parent compound YBa₂Cu₄O₈. This supports the conjecture that not all of the Ca²⁺ ions may be occupying Y sites.

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Superconducting behaviour of Y_0·8Ce_0·1Ca_0·1Ba₂Cu₄O₈

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Superconducting behaviour of Y0·8Ce0·1Ca0·1Ba2Cu4O8

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Superconducting behaviour of Y_0·8Ce_0·1Ca_0·1Ba₂Cu₄O₈