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

N. R. Khasanova; A. Yamamoto; S. Tajima; X. J. Wu; K. Tanabe

doi:10.1016/S0921-4534(98)00340-2

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

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

Research output: Contribution to journal › Article › peer-review

39 Citations (Scopus)

Abstract

New superconducting compound in the K-Bi-O system was obtained under high pressure. Pure perovskite phase can be prepared for K_1-XBi_1+XO₃ in the range x = 0.0-0.2. Bulk superconductivity with T_c of 10.2 K is observed for samples K_1-x Bi_1+xO₃ with x = 0.0-0.1. Transition temperature T_c 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 T_c in these materials.

Original language	English
Pages (from-to)	275-280
Number of pages	6
Journal	Physica C: Superconductivity and its applications
Volume	305
Issue number	3-4
DOIs	https://doi.org/10.1016/S0921-4534(98)00340-2
Publication status	Published - 1998 Sept 1
Externally published	Yes

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

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10.1016/S0921-4534(98)00340-2

Cite this

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title = "Superconductivity at 10.2 K in the K-Bi-O system",

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.",

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author = "Khasanova, {N. R.} and A. Yamamoto and S. Tajima and Wu, {X. J.} and K. Tanabe",

note = "Funding Information: This work was supported by the New Energy and Industrial Technology Development Organization (NEDO) of Japan.",

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T1 - Superconductivity at 10.2 K in the K-Bi-O system

AU - Khasanova, N. R.

AU - Yamamoto, A.

AU - Tajima, S.

AU - Wu, X. J.

AU - Tanabe, K.

N1 - Funding Information: This work was supported by the New Energy and Industrial Technology Development Organization (NEDO) of Japan.

PY - 1998/9/1

Y1 - 1998/9/1

N2 - 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.

AB - 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.

KW - Bismuth oxide based superconductor

KW - Doping level

KW - Structural transformation

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IS - 3-4

ER -

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

Abstract

Keywords

ASJC Scopus subject areas

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