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

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

doi:10.1016/S0921-4534(01)00122-8

Extended range of superconducting bismuthates K_1-xA_xBiO₃ (A = La, Bi, and Ca)

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

Global course of Engineering and Science

Research output: Contribution to journal › Article

10 Citations (Scopus)

Abstract

Synthesis and physical properties of new superconducting bismuthates, K_1-xA_xBiO₃ (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), T_c 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 T_c in this class of materials.

Original language	English
Pages (from-to)	12-22
Number of pages	11
Journal	Physica C: Superconductivity and its applications
Volume	356
Issue number	1-2
DOIs	https://doi.org/10.1016/S0921-4534(01)00122-8
Publication status	Published - 2001 Jan 7

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Keywords

Bismuthates
High-pressure technique
Superconductivity

ASJC Scopus subject areas

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

Cite this

Khasanova, N. R., Yoshida, K., Yamamoto, A., & Tajima, S. (2001). Extended range of superconducting bismuthates K_1-xA_xBiO₃ (A = La, Bi, and Ca). Physica C: Superconductivity and its applications, 356(1-2), 12-22. https://doi.org/10.1016/S0921-4534(01)00122-8

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10.1016/S0921-4534(01)00122-8