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Possibility of High-Tc Copper Fluoride Oxide Superconductors

Published online by Cambridge University Press:  28 February 2011

P. T. Wu ,
R. S. Liu ,
H. M. Sung  and
J. H. Rung
P. T. Wu
Affiliation:
Materials Research Laboratories, Industrial Technology Research Institute, 195 Chung-hsing Rd., Sec. 4, Chutung, Hsinchu 31015, Taiwan, Republic of, China.
R. S. Liu
Affiliation:
Materials Research Laboratories, Industrial Technology Research Institute, 195 Chung-hsing Rd., Sec. 4, Chutung, Hsinchu 31015, Taiwan, Republic of, China.
H. M. Sung
Affiliation:
Materials Research Laboratories, Industrial Technology Research Institute, 195 Chung-hsing Rd., Sec. 4, Chutung, Hsinchu 31015, Taiwan, Republic of, China.
J. H. Rung
Affiliation:
Materials Research Laboratories, Industrial Technology Research Institute, 195 Chung-hsing Rd., Sec. 4, Chutung, Hsinchu 31015, Taiwan, Republic of, China.
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Abstract

Superconductivity of YBa2Cu3FxOy system prepared by using a mixed solid state and gel method. A consistent and non-zero resistance drop near 280K was achieved in the nominal YBa2Cu3FxOy system for x=l and 2, with complete loss of resistance at 90K. The metal-semiconductor transition occurs at x value between 2 and 3. Temporal room temperature superconductivity with zero resistance was observed in a YBa2Cu3F2Oy sample at 308K. The phenomenon lasted for three minutes and was not reproducible.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 99: Symposium AA – High-Temperature Superconductors , 1987 , 623
Copyright
Copyright © Materials Research Society 1988

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References

REFERENCES

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