Improvement of Persistent Magnetic Field Trapping in Bulk Y-Ba-Cu-O Superconductors

In Gann Chen, Roy Weinstein

研究成果: Letter

4 引文 斯高帕斯(Scopus)

摘要

Far type II superconductors, magnetic field can be trapped due to persistent internal super-current. Quasi-persistent magnetic fields near 2 Tesla at 60 K (and 1.4 T at 77 K) have been measured in mini-magnets made of proton irradiated melt-textured Y-Ba-Cu-0 (MT-Y123) samples. Using this effect, high field permanent magnets with dipole, quadrupole, or more complicated configurations can be made of existing MT-Y123 material, thus bypassing the need for high temperature superconductor (HTS) wires. A phenomenological current model has been developed to account for the trapped field intensity and profile in HTS samples. This model is also a guide to select directions of materials development to further improve field trapping properties. General properties, such as magnetic field intensities, spatial distributions, stabilities, and temperature dependance of trapped field will be discussed.

原文English
頁(從 - 到)1041-1044
頁數4
期刊IEEE Transactions on Applied Superconductivity
3
發行號1
DOIs
出版狀態Published - 1993 三月

    指紋

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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