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Superconductivity and Sr-Doping Effects in La2-x Ca1+x Cu2O6-x/2+δ

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The Physics and Chemistry of Oxide Superconductors

Part of the book series: Springer Proceedings in Physics ((SPPHY,volume 60))

Abstract

Superconductivity is detected in the Ca-based 2-1-2-6 compound La2-x Ca1+x Cu2O6-x/2+δ (0.08 ≤ x ≤ 0.3) synthesized in O2 at a pressure of more than 10 atm. Superconducting properties of Sr-doped samples are investigated in the series La1.7(Ca1-y Sr y )1.3Cu2O5.85+δ (0 ≤ y ≤ 1) compounds synthesized under several O2 pressures. Sr-doping reduces the critical O2 pressure and produces 2-1-2-6 superconductors more easily when y < 0.5; however, it destroys superconductivity when y >0.5. With higher oxygen pressure during synthesis, a lower Sr concentration is allowed for superconductivity.

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© 1992 Springer-Verlag Berlin, Heidelberg

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Kinoshita, K., Shibata, H., Yamada, T. (1992). Superconductivity and Sr-Doping Effects in La2-x Ca1+x Cu2O6-x/2+δ . In: Iye, Y., Yasuoka, H. (eds) The Physics and Chemistry of Oxide Superconductors. Springer Proceedings in Physics, vol 60. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-77154-5_60

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  • DOI: https://doi.org/10.1007/978-3-642-77154-5_60

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-642-77156-9

  • Online ISBN: 978-3-642-77154-5

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