Effect of oxygen concentration on superconductivity of Bi-Sr-Ca-K-Cu-O compounds

Journal Article · Fri Feb 01 04:00:00 EST 1991 · Journal of Superconductivity; (United States)

DOI:https://doi.org/10.1007/BF00618294· OSTI ID:6999850

Zhiyi, Han; Zhiqiang, Mao; Yu, Wang; Qun, Chen; Ning, Zhang; Zhe, Zhou; LieZhao, Chao; Zhaojia, Cheng; Guien, Zhou; Yuheng, Zhang ^[1]

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1. Univ. of Science and Technology of China, Anhui (China)

In order to study the relation between the oxygen content and superconductivity samples of Bi{sub 2}Sr{sub 2}Ca{sub 1{minus}x}K{sub x}Cu{sub 2}O{sub y} (x = 0, 0.05, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0) were prepared and treated under different conditions. It was found that the superconducting properties are sensitive to the oxygen concentration and the T{sub c,zero} of Bi{sub 2}Sr{sub 2}Ca{sub 1{minus}x}K{sub x}Cu{sub 2}O{sub y} can be shifted over a range of about 22 K by the changing oxygen concentration; no structural difference induced by oxygen were observed. The change in superconducting properties may be the result of a change in Cu average valence state. In addition, the change in superconducting phase with K{sup +} concentration is also studied.

• OSTI ID: 6999850
• Journal Information: Journal of Superconductivity; (United States), Journal Name: Journal of Superconductivity; (United States) Vol. 4:1; ISSN JOUSE; ISSN 0896-1107
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360207* -- Ceramics
Cermets
& Refractories-- Superconducting Properties-- (1992-)
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
BISMUTH COMPOUNDS
BISMUTH OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
CHARGED PARTICLES
COPPER
COPPER COMPOUNDS
COPPER OXIDES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELEMENTS
IONS
METALLURGICAL EFFECTS
METALS
NONMETALS
OXIDES
OXYGEN
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
POTASSIUM COMPOUNDS
POTASSIUM IONS
POTASSIUM OXIDES
QUANTITY RATIO
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTIVITY
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
VALENCE