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Formation of Superconducting La2−xSrxCaCu2O6−δ Ceramic with Application of O2-HIP Technique

Published online by Cambridge University Press:  15 February 2011

Kiyoshi Oshima ,
Yuichi Watanabe ,
Masasuke Takata  and
Kozo Ishizaki
Kiyoshi Oshima
Affiliation:
Department of Electrical Engineering, Nagaoka University of Technology, Nagaoka, Niigata 940–21, Japan
Yuichi Watanabe
Affiliation:
Department of Electrical Engineering, Nagaoka University of Technology, Nagaoka, Niigata 940–21, Japan
Masasuke Takata
Affiliation:
Department of Electrical Engineering, Nagaoka University of Technology, Nagaoka, Niigata 940–21, Japan
Kozo Ishizaki
Affiliation:
Department of Mechanical Engineering, Nagaoka University of Technology, Nagaoka, Niigata 940–21, Japan
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Abstract

Superconducting La2−xSrxCaCu2O6−δ ceramics (x=0−0.6) were prepared with application of the oxygen-hot-isostatic pressing (O2-HIP) technique. The Tc of various samples was found to depend on both the Sr content and the applied oxygen partial pressure in the HIP treatment. The maximum Tc onset of 50K was observed for samples of the composition x=0.3 and 0.4 HIPped at 1050°C under 60atm oxygen partial pressure, and x=0.1 and 0.2 HIPped at 1050°C under 400atm oxygen partial pressure, respectively. From the analysis of x-ray diffraction patterns for superconducting substances, it was found that there existed a strong correlation between superconducting properties and the lattice parameters.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 251: Symposium S – Pressure Effects on Materials Processing and Design , 1991 , 313
Copyright
Copyright © Materials Research Society 1992

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References

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