Local chemistry and vibrational behavior of the rare-earth in the high Tc superconductor EuBa2Cu3O7-□

P. Boolchand, R. N. Enzweiler, Ivan Zitkovsky, R. L. Meng, P. H. Hor, C. W. Chu, C. Y. Huang

研究成果: Article同行評審

39 引文 斯高帕斯(Scopus)

摘要

Temperature dependent 151Eu Mossbauer spectroscopy experiments on the high Tc≧90K superconductor EuBa2Cu3O7 in the range of 4.2K < T < 300K display evidence of Eu3+ site only. No evidence of Eu2+ sites is observed. Variation of isomer-shift σ(T) and recoil-free-fraction f(T) shows that the mean square displacement (lnf) and mean square velocity (σ) of the Eu3+ site are both characterized by a Debye temperature θD=280(5)K. No discernible evidence of a phonon mediated structural transition as a precursor to Tc is observed in the temperature range examined.

原文English
頁(從 - 到)521-524
頁數4
期刊Solid State Communications
63
發行號6
DOIs
出版狀態Published - 1987 八月

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

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