Detection of oxygen deficient regions in yba2cu3 ox superconductors by polarized optical microscopy

Masato Murakami, Masashi Yoshida, Hiroyuki Fujimoto, Satoshi Gotoh, Naoki Koshizuka, Shoji Tanaka

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5 Citations (Scopus)

Abstract

We have found that oxygen deficient regions in YBa2Cu3Ox superconductors exhibit different colors from that of the matrix under polarized light. When oxygen annealing was insufficient, large melt-grown YBaCuO crystals occasionally contained narrow bands exhibiting different colors where the twin structure was absent. Upon annealing in oxygen at­mosphere, these banded regions disappeared, indicating that these regions are oxygen deficient. Raman spectroscopy measurements also confirmed that such regions are oxygen deficient.

Original languageEnglish
Pages (from-to)L796-L797
JournalJapanese Journal of Applied Physics
Volume30
Issue number5
DOIs
Publication statusPublished - 1991 May

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Keywords

  • Color
  • Oxygen deficiency
  • Polarized optical microscopy
  • Raman spectroscopy
  • YBacuo

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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