Heat-treatment effects on the Raman scattering spectra of NdBa 2Cu3O7-δ

N. Watanabe, R. Hareyama, T. Machi, S. Arai, N. Koshizuka, M. Murakami

Research output: Contribution to journalConference article

Abstract

The polarized Raman spectra of NdBa2Cu3O 7-δ single crystals heated at ∼900 °C under various oxygen partial pressures (PO2) have been investigated. It was found that the linewidth of Ba mode sharpens and the relative intensity of this mode is enhanced with increasing PO2. These observations show that such a high-temperature heat-treatment changes the distribution of Nd-rich 123 clusters.

Original languageEnglish
Pages (from-to)175-180
Number of pages6
JournalPhysica C: Superconductivity and its applications
Volume392-396
Issue numberPART 1
DOIs
Publication statusPublished - 2003 Oct 1
EventProceedings of the 15th International Symposium on Superconduc - Yokohama, Japan
Duration: 2002 Nov 112002 Nov 13

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Keywords

  • NdBaCuO
  • Peak effect
  • Phonon spectrum
  • Raman scattering
  • Substitution effects

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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