Site-Dependent 18O Substitution in YBa2Cu3O7Studied by Raman Scattering Measurements

Ryusuke Nishitani, Naoki Yoshida, Yoshiro Sasaki, Yuichiro Nishina, Hiroshi Yoshida-Katayama, Yutaka Okabe, Takashi Takahashi

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3 Citations (Scopus)


The site-dependent replacement of 16O with 18O in YBa2Cu316O7has been identified by Raman scattering measurements of different vibrational modes in the CuO2and BaO planes. The Raman shifts due to isotope substitution for different modes in inequivalent oxygen positions show different temperature dependences. The activation energy of oxygen replacement in the BaO plane is lower than that in the CuO2plane. The results show that the degree of oxygen substitution is site-dependent.

Original languageEnglish
Pages (from-to)L50-L52
JournalJapanese Journal of Applied Physics
Issue number1
Publication statusPublished - 1990 Jan


  • Isotope effect
  • Phonon
  • Raman scattering
  • Site-selective substitution
  • Superconducting oxide
  • YBaCuO


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