Superconductivity at 10.2 K in the K-Bi-O system

N. R. Khasanova, Ayako Yamamoto, S. Tajima, X. J. Wu, K. Tanabe

Research output: Contribution to journalArticle

35 Citations (Scopus)

Abstract

New superconducting compound in the K-Bi-O system was obtained under high pressure. Pure perovskite phase can be prepared for K1-XBi1+XO3 in the range x = 0.0-0.2. Bulk superconductivity with Tc of 10.2 K is observed for samples K1-x Bi1+xO3 with x = 0.0-0.1. Transition temperature Tc does not change within this interval, though deviation from the range x = 0.0-0.1 leads to deterioration of superconducting properties. X-ray diffraction showed that the structure of the superconducting samples is cubic perovskite, which was confirmed by electron diffraction study. After comparing the present results with known bismuth oxide based superconductors we conclude that doping level plays a predominant role in determining the magnitude of Tc in these materials.

Original languageEnglish
Pages (from-to)275-280
Number of pages6
JournalPhysica C: Superconductivity and its Applications
Volume305
Issue number3-4
Publication statusPublished - 1998 Sep 1
Externally publishedYes

Fingerprint

Superconductivity
Perovskite
superconductivity
bismuth oxides
Bismuth
deterioration
Electron diffraction
Superconducting materials
Superconducting transition temperature
Deterioration
electron diffraction
transition temperature
Doping (additives)
intervals
deviation
X ray diffraction
Oxides
diffraction
x rays
perovskite

Keywords

  • Bismuth oxide based superconductor
  • Doping level
  • Structural transformation

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., Yamamoto, A., Tajima, S., Wu, X. J., & Tanabe, K. (1998). Superconductivity at 10.2 K in the K-Bi-O system. Physica C: Superconductivity and its Applications, 305(3-4), 275-280.

Superconductivity at 10.2 K in the K-Bi-O system. / Khasanova, N. R.; Yamamoto, Ayako; Tajima, S.; Wu, X. J.; Tanabe, K.

In: Physica C: Superconductivity and its Applications, Vol. 305, No. 3-4, 01.09.1998, p. 275-280.

Research output: Contribution to journalArticle

Khasanova, NR, Yamamoto, A, Tajima, S, Wu, XJ & Tanabe, K 1998, 'Superconductivity at 10.2 K in the K-Bi-O system', Physica C: Superconductivity and its Applications, vol. 305, no. 3-4, pp. 275-280.
Khasanova NR, Yamamoto A, Tajima S, Wu XJ, Tanabe K. Superconductivity at 10.2 K in the K-Bi-O system. Physica C: Superconductivity and its Applications. 1998 Sep 1;305(3-4):275-280.
Khasanova, N. R. ; Yamamoto, Ayako ; Tajima, S. ; Wu, X. J. ; Tanabe, K. / Superconductivity at 10.2 K in the K-Bi-O system. In: Physica C: Superconductivity and its Applications. 1998 ; Vol. 305, No. 3-4. pp. 275-280.
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