Published January 20, 1994
| Version v1
Journal article
Peak effect in untwinned YBa2Cu3O7-δ single crystals
- 1. Ecole Polytechnique Federale, Lausanne (Switzerland). Dept. de Physique
- 2. Geneva Univ. (Switzerland). Dept. de Physique de la Matiere Condensee
Description
For YBa2Cu3O7-δ untwinned single crystals of differing purity a peak effect of the critical current density as a function of the temperature is observed by transverse a.c. susceptometry at very low frequency. Increasing purity shifts the peak effect towards Tc and globally reduces Jc to lower values. We prove the 3D regime by testing whether or not cutting and reconnecting the flux lines in magnetically induced ''force-free configuration'' is possible. The peak effect appears to result from the pre-melt softening of the flux line lattice. (orig.)
Additional details
Publishing Information
- Journal Title
- Europhysics Letters
- Journal Volume
- 25
- Journal Issue
- 3
- Journal Page Range
- p. 225-230.
- ISSN
- 0295-5075
- CODEN
- EULEEJ
INIS
- Country of Publication
- France
- Country of Input or Organization
- France
- INIS RN
- 25051543
- Subject category
- S36: MATERIALS SCIENCE; S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Descriptors DEI
- BARIUM OXIDES; COPPER OXIDES; CRITICAL CURRENT; CRYSTAL LATTICES; DATA ANALYSIS; HIGH-TC SUPERCONDUCTORS; MAGNETIC SUSCEPTIBILITY; MELTING; MICROSTRUCTURE; MONOCRYSTALS; PEAKS; TEMPERATURE DEPENDENCE; TEMPERATURE RANGE 0065-0273 K; TRANSITION TEMPERATURE; TWINNING; YTTRIUM OXIDES
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; BARIUM COMPOUNDS; CHALCOGENIDES; COPPER COMPOUNDS; CRYSTAL STRUCTURE; CRYSTALS; CURRENTS; ELECTRIC CURRENTS; MAGNETIC PROPERTIES; OXIDES; OXYGEN COMPOUNDS; PHASE TRANSFORMATIONS; PHYSICAL PROPERTIES; SUPERCONDUCTORS; TEMPERATURE RANGE; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENT COMPOUNDS; YTTRIUM COMPOUNDS