Quasipermanent magnets of high temperature superconductor: Temperature dependence
- 21 June 1993
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 62 (25) , 3366-3368
- https://doi.org/10.1063/1.109073
Abstract
We report on persistent field in quasipermanent magnets of high temperature superconductors. Magnets composed of irradiated Y1+Ba2Cu3O7 trapped field Bt=1.52 T at 77 K and 1.9 T at lower temperature. However, the activation magnet limited Bt at lower temperature. We present data on Jc(H,T) for unirradiated materials, and calculate Bt at various T. Based upon data at 65 K we calculate Bt in unirradiated single grains at 20 K, and find that 5.2 T will be trapped for grain diameter d∼1.2 cm, and 7.9 T for d=2.3 cm. Irradiated grains will trap four times these values.Keywords
This publication has 11 references indexed in Scilit:
- Studies of magnetization currents in YBa2Cu3O7−x superconductorsJournal of Applied Physics, 1993
- Magnetic hysteresis and flux creep of melt-powder-melt-growth superconductorsPhysical Review B, 1992
- Critical currents and flux creep in melt powder melt grown YBa2Cu3O7superconductorsSuperconductor Science and Technology, 1992
- Trapped magnetic field and critical current density in melt-textured Y-Ba-Cu-O superconductorsPhysica C: Superconductivity and its Applications, 1991
- Critical currents in proton-irradiated single-crystal Ba2YCu3O7−δApplied Physics Letters, 1990
- Persistent magnetic fields trapped in high T c superconductorApplied Physics Letters, 1990
- Melt Processing of YBaCuO Oxide SuperconductorsPublished by Springer Nature ,1990
- High current density in bulk YBa2Cu3Ox superconductorApplied Physics Letters, 1989
- Magnetization of High-Field SuperconductorsReviews of Modern Physics, 1964
- Magnetization of Hard SuperconductorsPhysical Review Letters, 1962