Oxygen-loss effects on superconductivity of Bi sub 2 Sr sub 2 CaCu sub 2 O sub y system

Journal Article · Wed May 01 04:00:00 EDT 1991 · Physical Review, B: Condensed Matter; (USA)

DOI:https://doi.org/10.1103/PhysRevB.43.10445· OSTI ID:5561695

Nagoshi, M; Suzuki, T ^[1]; Fukuda, Y; Terashima, K; Nakanishi, Y ^[2]; Ogita, M ^[3]; Tokiwa, A; Syono, Y; Tachiki, M ^[4]

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1. Steel Research Center, NKK Corporation, Kawasaki 210, Japan (JP)
2. Research Institute of Electronics, Shizuoka University, Hamamatsu 432, Japan (JP)
3. College of Engineering, Shizuoka University, Hamamatsu 432, Japan (JP)
4. Institute for Materials Research, Tohoku University, Sendai 980, Japan (JP)

The properties of Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub {ital y}} annealed at 200--650 {degree}C in vacuum (10{sup {minus}4}Pa) are studied by x-ray powder diffraction, ac magnetization, and Hall measurement. The amount of oxygen loss, {Delta}{ital y}, was obtained by an integration of the oxygen partial pressure measured by a quadrupole mass spectrometer. The {ital T}{sub {ital c}} increases from 65 to 92 K, which is accompanied by a small amount of oxygen loss (on the order of 10{sup {minus}3}). The {ital a} and {ital c} axes are extended by the oxygen loss. The change of the hole concentration estimated by Hall measurement is of the same order of magnitude as that for the other superconducting oxides against the change of {ital T}{sub {ital c}}, however, it is larger by about two orders of magnitude than that expected from the oxygen loss. This discrepancy suggests charge redistribution in the structure.

• OSTI ID: 5561695
• Journal Information: Physical Review, B: Condensed Matter; (USA), Journal Name: Physical Review, B: Condensed Matter; (USA) Vol. 43:13; ISSN PRBMD; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
ANNEALING
BISMUTH COMPOUNDS
BISMUTH OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
DESORPTION
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELEMENTS
EMANATION METHOD
HEAT TREATMENTS
HIGH TEMPERATURE
NONMETALS
OXIDES
OXYGEN
OXYGEN COMPOUNDS
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STOICHIOMETRY
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTIVITY
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE