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Degradation of Y–Ba–Cu–O in a high-humidity environment

  • M. M. Garland (a1)

Abstract

Changes in ac susceptibility of the high-Tc superconductor Y–Ba–Cu–O have been used to investigate the degradation of this material in the presence of high humidity. It is found that the fraction of YBa2Cu3O7 in a sample decreases exponentially with time when the sample is kept at 98% relative humidity and 20 °C. The time constant is approximately 22 days.

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1Wu, M. K., Ashburn, J. R., Torng, C. J., Meng, P. H., Gao, L., Huang, Z. J., Wang, Y. Q., and Chu, C. W., Phys. Rev. Lett. 58, 908 (1987).
2Yan, M. F., Barns, R. L., O'Bryan, H. M. Jr , Gallagher, P. K., Sherwood, R. C., and Jin, S., Appl. Phys. Lett. 51, 532 (1987).
3Barns, R. L. and Laudise, R. A, Appl. Phys. Lett. 51, 1373 (1987).
4Bansai, N. P. and Sandkuhl, A. L., Appl. Phys. Lett. 52, 323 (1988).

Degradation of Y–Ba–Cu–O in a high-humidity environment

  • M. M. Garland (a1)

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