Raman Scattering from Co-substituted YBa2Cu3-xCoxO6+y Superconductors

Hirotaka Fujimori, Masato Kakihana, Masatomo Yashima, Masahiro Yoshimura, Hiromasa Mazaki, Hiroshi Yasuoka

研究成果: Article同行評審

摘要

A systematic Micro-Raman spectroscopic investigation has been performed on YBa2Cu3-xCoxO6+y ceramic samples of different Co content x in the interval 0≤x≤1 which are prepared by a polymerized complex method. With increasing Co content an evolution of the defect induced Raman scattering of the CuO chain modes (550-650 cm-1 region) has been observed. The intensity of the defect modes has increased with increasing Co concentration, which has in turn suggested increased disordering of oxygen in the based (Cu/Co)-Oy plane. It has been infered from Raman spectroscopic results that the CuO chain disorder is closely related to Tc and a certain minimal size of the oxygen disordered (or ordered) domain is needed for a decrease in Tc (or the appearance of superconductivity).

原文English
頁(從 - 到)792-797
頁數6
期刊journal of the japan society of powder and powder metallurgy
42
發行號7
DOIs
出版狀態Published - 1995

All Science Journal Classification (ASJC) codes

  • 機械工業
  • 工業與製造工程
  • 金屬和合金
  • 材料化學

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