Preparation and properties of OCMG-processed Gd-Ba-Cu-O bulk superconductors with very fine Gd211 particles

S. Nariki; N. Sakai; M. Murakami

doi:10.1016/S0921-4534(01)00371-9

Preparation and properties of OCMG-processed Gd-Ba-Cu-O bulk superconductors with very fine Gd211 particles

S. Nariki, N. Sakai, M. Murakami

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

42 Citations (Scopus)

Abstract

We have succeeded in enhancing J_c values of bulk Gd-Ba-Cu-O by employing fine Gd₂BaCuO₅ (Gd211) powders as precursor material. The mean diameter of Gd211 particles dispersed in the GdBa₂Cu₃O_y matrix could be reduced to 0.3 μm when we used ball-milled Gd211 starting powders <0.1 μm in average diameter. The J_c value of bulk Gd-Ba-Cu-O with refined Gd211 reached 130000 A/cm² in self-field at 77 K.

Original language	English
Pages (from-to)	811-813
Number of pages	3
Journal	Physica C: Superconductivity and its applications
Volume	357-360
Issue number	SUPPL. 2
DOIs	https://doi.org/10.1016/S0921-4534(01)00371-9
Publication status	Published - 2001 Aug 1
Externally published	Yes

Keywords

Critical current density
Gd-Ba-Cu-O
Melt processing

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 = "We have succeeded in enhancing Jc values of bulk Gd-Ba-Cu-O by employing fine Gd2BaCuO5 (Gd211) powders as precursor material. The mean diameter of Gd211 particles dispersed in the GdBa2Cu3Oy matrix could be reduced to 0.3 μm when we used ball-milled Gd211 starting powders <0.1 μm in average diameter. The Jc value of bulk Gd-Ba-Cu-O with refined Gd211 reached 130000 A/cm2 in self-field at 77 K.",

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AU - Nariki, S.

AU - Sakai, N.

AU - Murakami, M.

PY - 2001/8/1

Y1 - 2001/8/1

N2 - We have succeeded in enhancing Jc values of bulk Gd-Ba-Cu-O by employing fine Gd2BaCuO5 (Gd211) powders as precursor material. The mean diameter of Gd211 particles dispersed in the GdBa2Cu3Oy matrix could be reduced to 0.3 μm when we used ball-milled Gd211 starting powders <0.1 μm in average diameter. The Jc value of bulk Gd-Ba-Cu-O with refined Gd211 reached 130000 A/cm2 in self-field at 77 K.

AB - We have succeeded in enhancing Jc values of bulk Gd-Ba-Cu-O by employing fine Gd2BaCuO5 (Gd211) powders as precursor material. The mean diameter of Gd211 particles dispersed in the GdBa2Cu3Oy matrix could be reduced to 0.3 μm when we used ball-milled Gd211 starting powders <0.1 μm in average diameter. The Jc value of bulk Gd-Ba-Cu-O with refined Gd211 reached 130000 A/cm2 in self-field at 77 K.

KW - Critical current density

KW - Gd-Ba-Cu-O

KW - Melt processing

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