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Effect of Sr and Sr-Ca substitution on the superconductivity of (Er0.76Ca0.24)Ba2(Cu2.76Co0.24)Oz

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Abstract

The structural and superconducting properties of (Er1-xCax)Ba2-ySry(Cu2.76Co0.24)Oz are investigated using X-ray diffraction, resistivity, ac susceptibility, and oxygen content measurements. Increasing the Sr content in (Er0.76Ca0.24)Ba2-ySry(Cu2.76Co0.24)Oz lowers the oxygen content and decreases theT c, which is attributed to the rearrangement of oxygen atoms in the basal plane. This suppression ofT c aty =0.6 cannot be improved by appropriate hole doping with Ca in (Er1-xCax)Ba1.4Sr0.6(Cu2.76Co0.24)Oz forx = 0.24-0.48.

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Authors and Affiliations

  1. Department of Physics, Saurashtra University, 360 005, Rajkot, India

    K. M. Pansuria, D. G. Kuberkar, G. J. Baldha & R. G. Kulkarni

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  1. K. M. Pansuria
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  2. D. G. Kuberkar
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  3. G. J. Baldha
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  4. R. G. Kulkarni
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Pansuria, K.M., Kuberkar, D.G., Baldha, G.J. et al. Effect of Sr and Sr-Ca substitution on the superconductivity of (Er0.76Ca0.24)Ba2(Cu2.76Co0.24)Oz . J Supercond 10, 59–62 (1997). https://doi.org/10.1007/BF02763953

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  • DOI: https://doi.org/10.1007/BF02763953

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