Irreversibility in Ba sub 0. 625 K sub 0. 375 BiO sub 3

Journal Article · Thu Jan 31 23:00:00 EST 1991 · Physical Review, B: Condensed Matter; (USA)

DOI:https://doi.org/10.1103/PhysRevB.43.3684· OSTI ID:5844944

Shi, D ^[1]; Ling, X S ^[2]; Xu, M ^[3]; Fang, M M ^[4]; Luo, S; Budnick, J I ^[2]; Dabrowski, B; Hinks, D G; Richards, D R; Zheng, Y ^[1]

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1. Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (USA)
2. Department of Physics, University of Connecticut, Storrs, Connecticut 06269 (USA)
3. School of Physics, Georgia Institute of Technology, Atlanta, Georgia 30332 (USA)
4. Department of Physics, Western Illinois University, Macomb, Illinois 61455 (USA)

An irreversibility line has been identified in bulk Ba{sub 0.625}K{sub 0.375}BiO{sub 3}, which follows the relation 1{minus}{ital T}/{ital T}{sub {ital c}}{similar to}{ital H}{sup 2/3}. According to the flux-creep model, the magnetic irreversibility is caused by thermally activated flux creep and is closely connected with the field-induced resistive broadening. However, previous resistivity measurements showed that the Ba{sub 0.625}K{sub 0.375}BiO{sub 3} system did not exhibit resistive transition broadening. Thus, an alternative explanation based on the Josephson-coupling model is suggested to interpret the irreversibility observed in Ba{sub 0.625}K{sub 0.375}BiO{sub 3}.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 5844944
• Journal Information: Physical Review, B: Condensed Matter; (USA), Journal Name: Physical Review, B: Condensed Matter; (USA) Vol. 43:4; ISSN 0163-1829; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
BCS THEORY
BISMUTH COMPOUNDS
BISMUTH OXIDES
CHALCOGENIDES
COHERENT SCATTERING
CRYSTALS
DIFFRACTION
IRREVERSIBLE PROCESSES
JOSEPHSON EFFECT
MAGNETIC FLUX
MAGNETIZATION
MONOCRYSTALS
OXIDES
OXYGEN COMPOUNDS
POTASSIUM COMPOUNDS
POTASSIUM OXIDES
SCATTERING
ULTRALOW TEMPERATURE
VERY LOW TEMPERATURE
X-RAY DIFFRACTION