Water content and superconductivity in Na0.3CoO 2·yH2O

J. Cmaidalka, A. Baikalov, Y. Y. Xue, R. L. Meng, C. W. Chu

研究成果: Article同行評審

14 引文 斯高帕斯(Scopus)

摘要

We report here the correlation between the water content and superconductivity in Na0.3CoO2·yH2O under the influences of elevated temperature and cold compression. The X-ray diffraction of the sample annealed at elevated temperatures indicates that intergrowths may exist in the compound at equilibrium when 0.6<y<1.4. Its low-temperature equilibrium diamagnetization Ms varies linearly with y, but is insensitive to the intergrowth, indicative of quasi-2D superconductivity. The Tc-onset, especially, shifts only slightly with y. Our data from cold compressed samples, on the other hand, show that the water loss non-proportionally suppresses the diamagnetization, which is suggestive of weak links.

原文English
頁(從 - 到)125-131
頁數7
期刊Physica C: Superconductivity and its applications
403
發行號3
DOIs
出版狀態Published - 2004 四月 1

All Science Journal Classification (ASJC) codes

  • 電子、光磁材料
  • 凝聚態物理學
  • 能源工程與電力技術
  • 電氣與電子工程

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