Irreversibility-line study in the polycrystalline Bi sub 2 Sr sub 2 CaCu sub 2 O sub 8 superconductor

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

DOI:https://doi.org/10.1103/PhysRevB.43.11423· OSTI ID:5809872

Zaleski, H; Razavi, F S ^[1]

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1. Department of Physics, Brock University, St. Catharines, Ontario, Canada L2S 3A1 (CA)

Measurements of irreversible magnetization in the superconducting state of the Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8} compound have been made using a dc magnetometer. It was found that the irreversible magnetization is proportional to ({ital T}{minus}{ital T}{sup *}){sup {ital n}}, where {ital T}{sup *} is the field-dependent irreversibility temperature and the power {ital n} is of the order of 5. The irreversibility temperature obeys the relation 1{minus}{ital T}{sup *}/{ital T}{sub {ital c}}{proportional to}{ital B}{sup 2/3} at fields up to 0.6 T. At higher fields, {ital T}{sup *} was found to vary more slowly with the field, which is in agreement with previously published results.

• OSTI ID: 5809872
• Journal Information: Physical Review, B: Condensed Matter; (USA), Vol. 43:13, Issue 13; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BISMUTH OXIDES
MAGNETIZATION
CALCIUM OXIDES
COPPER OXIDES
STRONTIUM OXIDES
HIGH-TC SUPERCONDUCTORS
IRREVERSIBLE PROCESSES
LOW TEMPERATURE
MAGNETIC FIELDS
SUPERCONDUCTIVITY
TEMPERATURE DEPENDENCE
VERY LOW TEMPERATURE
ALKALINE EARTH METAL COMPOUNDS
BISMUTH COMPOUNDS
CALCIUM COMPOUNDS
CHALCOGENIDES
COPPER COMPOUNDS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
STRONTIUM COMPOUNDS
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
360204* - Ceramics
Cermets
& Refractories- Physical Properties