Published February 1994
| Version v1
Journal article
Flux pinning and the irreversibility line in Bi2Sr2CaCu2O8 single crystals
Creators
- 1. Dept. of Physics, Univ. of Nottingham (United Kingdom)
- 2. Dept. of Physics, Univ. of Warwick, Coventry (United Kingdom)
Description
Measurements of the ac-susceptibility have been used to investigate the irreversibility line (IL) for a Bi2Sr2CaCu2O8 single crystal. The activation energy, U0, determined from the frequency dependence of the ac-susceptibility, can be related to the IL if one employs the model of thermally activated flux creep. This correlation is clearly demonstrated by the observation of a kink in the IL and the existence of two regions in the U0(H) curve. These results show that for the magnetic field strengths considered in this work, the IL is a depinning line marking a crossover from flux creep to flux flow regimes. (orig.)
Additional details
Publishing Information
- Journal Title
- Physica. B, Condensed Matter
- Journal Volume
- 194-196
- Journal Page Range
- p. 1887-1888.
- ISSN
- 0921-4526
- CODEN
- PHYBE3
Conference
- Title
- 20. IUPAP international conference on low temperature physics (LT-20).
- Dates
- 4-11 Aug 1993.
- Place
- Eugene, OR (United States).
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- Netherlands
- INIS RN
- 25057426
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; S36: MATERIALS SCIENCE;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- ACTIVATION ENERGY; BISMUTH OXIDES; CALCIUM OXIDES; COPPER OXIDES; CREEP; FLUID FLOW; FREQUENCY DEPENDENCE; HIGH-TC SUPERCONDUCTORS; IRREVERSIBLE PROCESSES; MAGNETIC FIELDS; MAGNETIC FLUX; MAGNETIC SUSCEPTIBILITY; MIXTURES; MONOCRYSTALS; PHASE TRANSFORMATIONS; STRONTIUM OXIDES; TEMPERATURE DEPENDENCE; TEMPERATURE RANGE 0000-0013 K; VORTEX FLOW
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; BISMUTH COMPOUNDS; CALCIUM COMPOUNDS; CHALCOGENIDES; COPPER COMPOUNDS; CRYSTALS; DISPERSIONS; ENERGY; MAGNETIC PROPERTIES; MECHANICAL PROPERTIES; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; STRONTIUM COMPOUNDS; SUPERCONDUCTORS; TEMPERATURE RANGE; TRANSITION ELEMENT COMPOUNDS