Optimization of ternary LRE-Ba-Cu-O materials for use at liquid oxygen temperature

M. Muralidhar; N. Sakai; M. Jirsa; M. Murakami; N. Koshizuka

doi:10.1016/j.physc.2003.12.072

Optimization of ternary LRE-Ba-Cu-O materials for use at liquid oxygen temperature

M. Muralidhar, N. Sakai, M. Jirsa, M. Murakami, N. Koshizuka

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

2 Citations (Scopus)

Abstract

The paper refers on advances in fabrication of mixed LREBa ₂Cu₃O_y (LRE: Nd, Sm, Eu, Gd; combinations NEG-123, NSG-123, and SEG-123) composites developed for bulk applications at liquid oxygen temperature. In order to enhance flux pinning over 90 K, we introduced to the 123 systems a ball-milled Gd₂BaCuO₅ powder in various average sizes ranging from 200 to <70 nm. In all these compounds Zr-rich nanoscale particles were formed that improved magnetic performance up to 90 K. As a result, levitation experiments with these ternary systems cooled by liquid oxygen were performed.

Original language	English
Pages (from-to)	575-579
Number of pages	5
Journal	Physica C: Superconductivity and its applications
Volume	412-414
Issue number	SPEC. ISS.
DOIs	https://doi.org/10.1016/j.physc.2003.12.072
Publication status	Published - 2004 Oct 1

Keywords

Critical current density (J)
Flux pinning
Levitation at 90 K
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 = "The paper refers on advances in fabrication of mixed LREBa 2Cu3Oy (LRE: Nd, Sm, Eu, Gd; combinations NEG-123, NSG-123, and SEG-123) composites developed for bulk applications at liquid oxygen temperature. In order to enhance flux pinning over 90 K, we introduced to the 123 systems a ball-milled Gd2BaCuO5 powder in various average sizes ranging from 200 to <70 nm. In all these compounds Zr-rich nanoscale particles were formed that improved magnetic performance up to 90 K. As a result, levitation experiments with these ternary systems cooled by liquid oxygen were performed.",

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AU - Koshizuka, N.

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