Fabrication of High Jc Oxide Superconductors by a Melt Process and Their Critical Current Characteristics

Masato Murakami

doi:10.2497/jjspm.36.584

Fabrication of High J_c Oxide Superconductors by a Melt Process and Their Critical Current Characteristics

Masato Murakami

Research output: Contribution to journal › Article › peer-review

Abstract

YBa₂Cu₃O_x 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 slow cooled in a thermal gradient. The process enabled uni-directional growth of the superconducting phase. Magnetization measurements revealed that magnetic properties of the melt processed samples could be understood in terms of Bean critical state model. The samples attained J_c values exceeding 10⁴ A/cm² at 77K and 1T. Ginat flux creep was not observed in such samples.

Original language	English
Pages (from-to)	584-587
Number of pages	4
Journal	Journal of the Japan Society of Powder and Powder Metallurgy
Volume	36
Issue number	5
DOIs	https://doi.org/10.2497/jjspm.36.584
Publication status	Published - 1989
Externally published	Yes

ASJC Scopus subject areas

Mechanical Engineering
Industrial and Manufacturing Engineering
Metals and Alloys
Materials Chemistry

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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 slow cooled in a thermal gradient. The process enabled uni-directional growth of the superconducting phase. Magnetization measurements revealed that magnetic properties of the melt processed samples could be understood in terms of Bean critical state model. The samples attained Jc values exceeding 104 A/cm2 at 77K and 1T. Ginat flux creep was not observed in such samples.",

author = "Masato Murakami",

year = "1989",

doi = "10.2497/jjspm.36.584",

language = "English",

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AB - 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 slow cooled in a thermal gradient. The process enabled uni-directional growth of the superconducting phase. Magnetization measurements revealed that magnetic properties of the melt processed samples could be understood in terms of Bean critical state model. The samples attained Jc values exceeding 104 A/cm2 at 77K and 1T. Ginat flux creep was not observed in such samples.

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Fabrication of High J_c Oxide Superconductors by a Melt Process and Their Critical Current Characteristics

Abstract

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