Published October 2007
| Version v1
Journal article
Magnetic Pinning Properties and Flux Jumps in Superconducting MgB2
- 1. Dept. of Physics, Kyungpook National University, Daegu (Korea, Republic of)
- 2. Korea Atomic Energy Research Institute, Daejeon (Korea, Republic of)
Description
Magnetization studies have been carried out on MgB2 polycrystalline samples in the temperature range of 5 - 44 K and in the magnetic field up to 7 Tesla. The critical current density was calculated from hysteresis loops using the Bean's critical state model, and the highest value of Jc at 20 K was 2.7 x 105 A/cm2 at 2 Tesla. The hysteresis loops were carefully examined to determine the temperature and magnetic field range where flux jumps appeared. The first jump occurred typically at 1 Tesla. Due to the strong pinning, we observed the presence of flux jump below H = 1 Tesla at temperature below 30 K.
Additional details
Publishing Information
- Journal Title
- Progress in Superconductivity
- Journal Volume
- 9
- Journal Issue
- 1
- Series
- 15 refs, 7 figs
- Journal Page Range
- p. 11-17
- ISSN
- 1229-4764
INIS
- Country of Publication
- Korea, Republic of
- Country of Input or Organization
- Korea, Republic of
- INIS RN
- 45043616
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Descriptors DEI
- COMPUTER CALCULATIONS; CRITICAL CURRENT; CURRENT DENSITY; MAGNESIUM BORIDES; MAGNETIC FIELDS; MAGNETIC FLUX; SUPERCONDUCTIVITY
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; BORIDES; BORON COMPOUNDS; CURRENTS; ELECTRIC CONDUCTIVITY; ELECTRIC CURRENTS; ELECTRICAL PROPERTIES; MAGNESIUM COMPOUNDS; PHYSICAL PROPERTIES