Local magnetic field distribution in polycrystalline YBa2Cu3O7 and its influence on bulk critical currents
- 1 June 1991
- journal article
- Published by Springer Nature in Journal of Materials Research
- Vol. 6 (6) , 1135-1147
- https://doi.org/10.1557/jmr.1991.1135
Abstract
The transport critical current density Jc has been measured in high quality polycrystalline YBa2Cu3O7 samples made from extruded preforms. The hysteretic response of Jc to applied magnetic fields was studied as a function of temperature (77–87 K) and sample morphology for various field sweeps in the 0–5 KOe range. A variety of samples show a basic Jc ∼ H−n behavior where n depends on temperature, but is independent of the other variables. A simple model of the local magnetic field distribution is presented and compared to the data, and the theoretical implications of the power law behavior are considered.Keywords
This publication has 56 references indexed in Scilit:
- The Use of Nitrogen Dioxide to Improve the Superconducting Properties of YBa2Cu3O7Journal of the American Ceramic Society, 1990
- Pulsed current measurement of the resistive transition and critical current in high T c superconductorsReview of Scientific Instruments, 1990
- The production of high performance YBa2Cu3O7 using nitrogen dioxideJournal of Materials Research, 1990
- Grain size dependence of the critical current density in YBa2Cu3Ox superconductorsApplied Physics Letters, 1989
- Critical current density of Y-Ba-Cu oxide superconductor prepared by a diffusion processIEEE Transactions on Magnetics, 1989
- The manufacturing process and properties of the high T/sub c/ oxide superconducting wireIEEE Transactions on Magnetics, 1989
- Round robin tests of T/sub c/ and I/sub c/ on YBa/sub 2/Cu/sub 3/O/sub x/IEEE Transactions on Magnetics, 1989
- Resistive Transition of High-Temperature SuperconductorsPhysical Review Letters, 1988
- Physical and mechanical properties of YBa2Cu3O7-δ superconductorsJournal of Materials Science, 1988
- Possible highT c superconductivity in the Ba?La?Cu?O systemZeitschrift für Physik B Condensed Matter, 1986