Quasipermanent Magnets of High Temperature Superconductor

Authors

In Gann Chen, University of Houston
Jianxiong Liu, University of Houston
Yanru Ren, University of Houston
Roy Weinstein, University of Houston
Gregory Kozlowski, Wright State University - Main CampusFollow
Charles E. Oberly, Wright-Patterson Air Force

Document Type

Article

Publication Date

1993

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Abstract

We report on persistent field in quasi-permanent magnets of high temperature superconductors. Magnets composed of irradiated Y(1+)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 about 1.2 cm, and 7.9 T for d = 2.3 cm. Irradiated grains will trap four times these values.

Repository Citation

Chen, I. G., Liu, J., Ren, Y., Weinstein, R., Kozlowski, G., & Oberly, C. E. (1993). Quasipermanent Magnets of High Temperature Superconductor. Applied Physics Letters, 62 (25), 3366-3368.
https://corescholar.libraries.wright.edu/physics/1579

DOI

10.1063/1.109073