Processing and superconducting properties of high-Jc bulk YBaCuO prepared by melt process

Mitsuru Morita; Katsuyoshi Miyamoto; Kenji Doi; Masato Murakami; Kiyoshi Sawano; Shoichi Matsuda

doi:10.1016/0921-4534(90)90632-O

Processing and superconducting properties of high-J_c bulk YBaCuO prepared by melt process

Mitsuru Morita, Katsuyoshi Miyamoto, Kenji Doi, Masato Murakami, Kiyoshi Sawano, Shoichi Matsuda

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

59 Citations (Scopus)

Abstract

The authors tried to produce high critical current density (J_c) bulk superconducting material by a melt process. It became clear that the grain boundary region acts as a weak-link and causes the low J_c of the sintered material. It was found that highly oriented bulk material can be produced by a melt process in YBaCuO system. The authors obtained samples which contained many fine Y₂BaCuO₅ (211) phases and no grain boundary throughout a region of several tens of cubic millimeters. By magnetization measurements, it was found that J_c exceeded 10⁴ A/cm₂ at 77 K and 1 T, which is a promising value for practical applications.

Original language	English
Pages (from-to)	383-387
Number of pages	5
Journal	Physica C: Superconductivity and its applications
Volume	172
Issue number	3-4
DOIs	https://doi.org/10.1016/0921-4534(90)90632-O
Publication status	Published - 1990 Dec 15
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

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abstract = "The authors tried to produce high critical current density (Jc) bulk superconducting material by a melt process. It became clear that the grain boundary region acts as a weak-link and causes the low Jc of the sintered material. It was found that highly oriented bulk material can be produced by a melt process in YBaCuO system. The authors obtained samples which contained many fine Y2BaCuO5 (211) phases and no grain boundary throughout a region of several tens of cubic millimeters. By magnetization measurements, it was found that Jc exceeded 104 A/cm2 at 77 K and 1 T, which is a promising value for practical applications.",

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AU - Murakami, Masato

AU - Sawano, Kiyoshi

AU - Matsuda, Shoichi

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AB - The authors tried to produce high critical current density (Jc) bulk superconducting material by a melt process. It became clear that the grain boundary region acts as a weak-link and causes the low Jc of the sintered material. It was found that highly oriented bulk material can be produced by a melt process in YBaCuO system. The authors obtained samples which contained many fine Y2BaCuO5 (211) phases and no grain boundary throughout a region of several tens of cubic millimeters. By magnetization measurements, it was found that Jc exceeded 104 A/cm2 at 77 K and 1 T, which is a promising value for practical applications.

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