Back to Search
Start Over
Critical currents of OCMG processed Nd123 crystals
- Source :
- Physica C: Superconductivity. 263:396-400
- Publication Year :
- 1996
- Publisher :
- Elsevier BV, 1996.
-
Abstract
- Critical current densities of Nd123 crystals flux grown by the oxygen-controlled-melt-growth (OCMG) process have been studied with DC magnetization measurements. The superconducting transition temperature ( T c ) of the Nd123 crystal flux grown in 0.1%O 2 Ar gas was 94 K with the applied field of 10 Oe parallel to the c -axis. The sample was found to be homogeneous without weakly linked regions through magneto-optical measurements. DC magnetization-hysteresis curves measured with a SQUID magnetometer exhibited a peak effect at various temperatures above 70 K. The peak effect is attributable to field-induced pinning by finely distributed low- T c phases. The sample exhibited high critical current density ( J c ) valuesof 4 × 10 4 A/cm 2 in 2 T and over 1 × 10 4 A/cm 2 in 4 T at 77 K for fields parallel to the c -axis.
- Subjects :
- Materials science
Field (physics)
Condensed matter physics
Magnetometer
Energy Engineering and Power Technology
Flux
Condensed Matter Physics
Electronic, Optical and Magnetic Materials
law.invention
Crystal
Magnetization
Homogeneous
law
Peak effect
Critical current
Electrical and Electronic Engineering
Subjects
Details
- ISSN :
- 09214534
- Volume :
- 263
- Database :
- OpenAIRE
- Journal :
- Physica C: Superconductivity
- Accession number :
- edsair.doi...........f73df42c300dda4572172dd6353db95f