Raman spectroscopy on nonstoichiometric Gd123 thin films

T. Kakeshita, K. Hirose, S. Lee

研究成果: Article査読

4 被引用数 (Scopus)

抄録

We performed the Raman measurements to investigate the effect of cation nonstoichiometry on Gd123 thin films. The Gd123 thin films are grown by a conventional pulsed laser deposition (PLD) method with cation off-stoichiometric target samples. The films show different superconducting (SC) properties (Tc, Jc) from one another. The Ba-poor composition shows the best SC properties, while the Ba-rich composition shows the worst properties. The Raman spectra also depend on the compositions. All the spectra exhibit the five phonon peaks peculiar to 123-structure, however, some show also other peaks which result from oxygen deficiency in the chain structure, or also other origins. We discuss that the SC properties are strongly affected by the disorders of Ba and chain sites due to the cation nonstoichiometry through the Raman spectra.

本文言語English
ページ(範囲)96-99
ページ数4
ジャーナルPhysica C: Superconductivity and its applications
463-465
SUPPL.
DOI
出版ステータスPublished - 2007 10 1

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • エネルギー工学および電力技術
  • 電子工学および電気工学

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