Crossover from bulk pinning to geometrical barrier in a Bi{sub {bold 2}}S r{sub {bold 2}}CaCu{sub {bold 2}}O{sub x}single crystal as revealed by a scanning ESR probe method

Journal Article · Fri Nov 01 00:00:00 EST 1996 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.54.13339· OSTI ID:389345

Khasanov, R I; Talanov, Y I ^[1]; Assmus, W ^[2]; Teitelbaum, G B ^[1]

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1. Kazan Institute for Technical Physics of Russian Academy of Sciences, 420029 Kazan (Russia)
2. Institute of Physics, University of Frankfurt, W-60052, Frankfurt (Germany)

The field distribution in the Bi:2212 rectangular strip, placed in a perpendicular magnetic field, was studied using the ESR microprobe scanned over the sample surface. The crossover of the magnetic-field profile from the dome shape, typical for a geometrical barrier ({ital T}{gt}30 K), to the bulk pinning picture ({ital T}{lt}25 K), was observed upon variation of temperature. The analysis of field distribution made it possible to determine the temperature dependence of the lower critical field. {copyright} {ital 1996 The American Physical Society.}

• OSTI ID: 389345
• Journal Information: Physical Review, B: Condensed Matter, Vol. 54, Issue 18; Other Information: PBD: Nov 1996
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
HIGH-TC SUPERCONDUCTORS
MIXED STATE
MONOCRYSTALS
BISMUTH OXIDES
STRONTIUM OXIDES
CALCIUM OXIDES
COPPER OXIDES
MAGNETIC FIELDS
SPATIAL DISTRIBUTION
ELECTRON SPIN RESONANCE
MICROSCOPY
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE 0013-0065 K