Published May 2001 | Version v1
Journal article Metadata-only

Vortex-line shape and second peak effect in high-Tc superconductors

Creators

  • 1. Department of Physics and National Laboratory of Solid State Microstructure, Nanjing Univerity, Nanjing (China)
  • 2. Department of Physics, Fourah Bay College, University of Sierra Leone, Freetown (Sierra Leone)
  • 3. Department of Manufacturing Engineering and Engineering Management, City University of Hong Kong, Hong Kong (China)

Description

The origin of the second peak effect in melt-textured YBa2Cu3O7-δ was investigated using the sweeping rate dependence of magnetic hysteresis loops. An anomalous change of the vortex-line shape was found around the second peak position. This phenomenon was ascribed to the competition between elastic energy Eel and pinning energy Epin of the flux system. By comparing it with the results of crystal samples such as YBCO, NCCO and Pb-doped BSCCO, we concluded that this characteristic is uniform for these high-Tc superconductors and should be responsible for the widely observed second peak effect in magnetization measurements. (author)

Availability note (English)

Available online at the Web site for the journal Superconductor Science and Technology (ISSN 1361-6668) http://www.iop.org/

Additional details

Identifiers

URL
http://www.iop.org/;

Publishing Information

Journal Title
Superconductor Science and Technology
Journal Volume
14
Journal Issue
5
Journal Page Range
p. 240-244
ISSN
0953-2048

INIS

Country of Publication
United Kingdom
Country of Input or Organization
Moldova, Republic of
INIS RN
43033521
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; S36: MATERIALS SCIENCE;
Descriptors DEI
BARIUM ALLOYS; COMPARATIVE EVALUATIONS; COPPER OXIDES; HIGH-TC SUPERCONDUCTORS; MAGNETIZATION; PEAKS; YTTRIUM ALLOYS
Descriptors DEC
ALLOYS; CHALCOGENIDES; COPPER COMPOUNDS; EVALUATION; OXIDES; OXYGEN COMPOUNDS; SUPERCONDUCTORS; TRANSITION ELEMENT ALLOYS; TRANSITION ELEMENT COMPOUNDS; TYPE-II SUPERCONDUCTORS

Optional Information

Notes
This record replaces 32029322