Published March 1, 1993
| Version v1
Journal article
Magnetic relaxation and intrinsic pinning in a single crystal of Bi2Sr2CaCu2Ox
- 1. Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
- 2. Instituto de Fisica, Caixa Postale 6165, Universidade Estadual de Campinas 13081-Campinas, Sao Paulo (Brazil)
- 3. Department of Electrical Engineering, University of Notre Dame, Notre Dame, Indiana 46556 (United States)
Description
Magnetic-relaxation experiments were performed on Bi2Sr2CaCu2Ox single crystals with the direction of the field parallel to the ab plane. Based on the relaxation data, we have obtained relationships between the activation energy U and the current density j by an approach we developed previously. We found that the activation energy has a logarithmic dependence on j in a wide regime of driving force. It has been reported that CuO2 planes in high-Tc superconductors can act as strong intrinsic pinning centers and that the relation U∼U0ln(jc/j) may describe such a pinning mechanism. Our experimental results have shown good agreement with such a physical model of intrinsic flux pinning
Additional details
Publishing Information
- Journal Title
- Physical Review. B, Condensed Matter
- Journal Volume
- 47
- Journal Issue
- 9
- Journal Page Range
- p. 5414-5418.
- ISSN
- 0163-1829
- CODEN
- PRBMDO
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 24049514
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- BISMUTH OXIDES; CALCIUM OXIDES; COPPER OXIDES; CURRENT DENSITY; HIGH-TC SUPERCONDUCTORS; MAGNETIC FLUX; MAGNETIZATION; MONOCRYSTALS; RELAXATION; STRONTIUM OXIDES
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; BISMUTH COMPOUNDS; CALCIUM COMPOUNDS; CHALCOGENIDES; COPPER COMPOUNDS; CRYSTALS; MAGNETIC MOMENTS; MAGNETIC PROPERTIES; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; STRONTIUM COMPOUNDS; SUPERCONDUCTORS; TRANSITION ELEMENT COMPOUNDS