Transport Critical Current Density of Polycrystalline YBCO in Zero Field Cooled and Field Cooled States: A Comparison
- 1 September 1990
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 29 (9A) , L1612
- https://doi.org/10.1143/jjap.29.l1612
Abstract
Magnetic field dependence of transport critical current density (J c) of a polycrystalline YBCO superconductor in field cooled and zero field cooled cases have been studied experimentally. The measured J c value when the sample was cooled in a field (FC) was always larger than that measured for a zero field cooled (ZFC) case in the same magnetic field. We also observe (i) a peak in the field dependence of the ratio of J c in FC case to that of ZFC case and (ii) an anomalous rise in J c in ZFC case with increasing field. These observations are explained as a signature of two types of regions (intergrain and intragrain) in sintered specimens.Keywords
This publication has 6 references indexed in Scilit:
- Irreversible behavior of the transport critical current in polycrystalline YBa2Cu3OyApplied Physics Letters, 1989
- Time‐decay of magnetisation in high-TcsuperconductorsPhase Transitions, 1989
- Magnetisation hysteresis and critical current densityPhysica C: Superconductivity and its Applications, 1989
- Critical Current Density and Its Hysteresis in Magnetic Field for Ba-Y-Cu-O Films Prepared by a Sputtering TechniqueJapanese Journal of Applied Physics, 1989
- Extension of Bean’s model for high-superconductorsPhysical Review B, 1989
- Texture formation and enhanced critical currents in YBa2Cu3O7Applied Physics Letters, 1988