Extended range of superconducting bismuthates K1-xAxBiO3 (A = La, Bi, and Ca)

N. R. Khasanova, K. Yoshida, A. Yamamoto, S. Tajima

研究成果: Article査読

14 被引用数 (Scopus)

抄録

Synthesis and physical properties of new superconducting bismuthates, K1-xAxBiO3 (A=Bi, La, and Ca), are reported. New compounds could only be prepared in a narrow range of composition, restricted by the A-site cation size, with cubic perovskite structure. For the first two systems (A = Bi, La), Tc was found to depend strongly on composition and was enhanced upon heterovalent substitution. The data obtained and comparison with known bismuthates show undoubtedly that band filling controlled by dopant concentration is a crucial parameter for variation of Tc in this class of materials.

本文言語English
ページ(範囲)12-22
ページ数11
ジャーナルPhysica C: Superconductivity and its applications
356
1-2
DOI
出版ステータスPublished - 2001 1月 7
外部発表はい

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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