Fabrication of high Jc oxide superconductors by a melt process and their critical current characteristics

Research output: Contribution to journalArticle

Abstract

YBa2Cu3Ox powders were rapidly heated to the Y2O3 plus liquid region and quenched using copper hammers. The quenched plates were again heated to the Y2BaCuO5 plus liquid region and slowly cooled in a thermal gradient. The process enabled unidirectional growth of the superconducting phase. Magnetization measurements revealed that magnetic properties of the melt processed samples could be understood in terms of a Bean critical state model. The samples attained Jc values exceeding 104 A/cm2 at 77K and 1T. Flux creep was not observed.

Original languageEnglish
Pages (from-to)584-587
Number of pages4
JournalFuntai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Volume36
Issue number5
Publication statusPublished - 1989 Jul
Externally publishedYes

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Oxide superconductors
Critical currents
Fabrication
Hammers
Liquids
Powders
Thermal gradients
Copper
Magnetization
Magnetic properties
Creep
Fluxes

ASJC Scopus subject areas

  • Mechanical Engineering
  • Metals and Alloys

Cite this

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abstract = "YBa2Cu3Ox powders were rapidly heated to the Y2O3 plus liquid region and quenched using copper hammers. The quenched plates were again heated to the Y2BaCuO5 plus liquid region and slowly cooled in a thermal gradient. The process enabled unidirectional growth of the superconducting phase. Magnetization measurements revealed that magnetic properties of the melt processed samples could be understood in terms of a Bean critical state model. The samples attained Jc values exceeding 104 A/cm2 at 77K and 1T. Flux creep was not observed.",
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