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Magnetic field penetration depth of polycrystalline (Y,Gd)Ba/sub 2/Cu/sub 3/O/sub 7/, grain-aligned YBa/sub 2/Cu/sub 3/O/sub 7/, and single-crystal Bi/sub 2/Sr/sub 2/CaCu/sub 2/O/sub 8/

Journal Article · · Phys. Rev. B: Condens. Matter; (United States)
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The magnetic field penetration depths /lambda/(/ital T/) of the title compounds are determined from high-field (/ital H/=2.5 to 5 T) magnetization /ital M/ versus applied magnetic field /ital H/ isotherms, by use of a new method of data analysis in the region /ital H//sub /ital c/1//much lt/H/much lt/H/sub c2/ where /ital M/ is reversible and linear in the logarithm of /ital H/. All of the /lambda/(/ital T/) results are consistent with behavior expected from BCS theory, indicating a nodeless superconducting order parameter. The magnitudes of /lambda/(0) are similar to reported values obtained using independent methods.

Research Organization:
Ames Laboratory-U.S. Department of Energy and Department of Physics, Iowa State University, Ames, Iowa 50011 (US)
DOE Contract Number:
W-7405-ENG-82
OSTI ID:
5947215
Journal Information:
Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 40:4; ISSN PRBMD
Country of Publication:
United States
Language:
English

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Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
BISMUTH COMPOUNDS
BISMUTH OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CORRELATIONS
CRYSTAL STRUCTURE
CRYSTALS
GADOLINIUM COMPOUNDS
GADOLINIUM OXIDES
GRAIN ORIENTATION
MAGNETIZATION
MICROSTRUCTURE
MONOCRYSTALS
ORDER PARAMETERS
ORIENTATION
OXIDES
OXYGEN COMPOUNDS
PENETRATION DEPTH
POLYCRYSTALS
RARE EARTH COMPOUNDS
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES