A new technique for pinning enhancement in ternary REBa2Cu3Oy systems

M. Muralidhar; M. Murakami

doi:10.1016/S0921-4534(02)01509-5

A new technique for pinning enhancement in ternary REBa₂Cu₃O_y systems

M. Muralidhar, M. Murakami

研究成果: Article

11 引用（Scopus）

抜粋

We have studied the effects of sub-micron Gd₂BaCuO₅ (Gd-211) particles on the microstructure and the magnetic properties of ternary melt-textured superconductors (Nd_0.33Eu_0.33Gd_0.33)Ba₂Cu₃O_y, (Nd_0.33Sm_0.33Gd_0.33)Ba₂Cu₃O_y, and (Sm_0.33Eu_0.33Gd_0.33)Ba₂Cu₃O_y. High-resolution transmission electron microscopic observations showed that there is strong compositional fluctuation in the REBa₂Cu₃O_y matrix, and the RE rich clusters 3-10 nm in size are distributed in the matrix, which are the candidates for pinning centers. Magnetization measurements revealed that a strongly developed fishtail is observed in all the samples. The peak position, its height, and irreversibility field is dependent on the chemical composition. The NSG-123 sample with 10 mol% Gd-211 exhibited the critical current density of 100 kAcm^-2 at 77 K and 2 T for H∥c-axis.

元の言語	English
ページ（範囲）	627-630
ページ数	4
ジャーナル	Physica C: Superconductivity and its applications
巻	378-381
発行部数	PART 1
DOI	https://doi.org/10.1016/S0921-4534(02)01509-5
出版物ステータス	Published - 2002 10 1

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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10.1016/S0921-4534(02)01509-5

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Muralidhar, M., & Murakami, M. (2002). A new technique for pinning enhancement in ternary REBa₂Cu₃O_y systems. Physica C: Superconductivity and its applications, 378-381(PART 1), 627-630. https://doi.org/10.1016/S0921-4534(02)01509-5

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abstract = "We have studied the effects of sub-micron Gd2BaCuO5 (Gd-211) particles on the microstructure and the magnetic properties of ternary melt-textured superconductors (Nd0.33Eu0.33Gd0.33)Ba2Cu3 Oy, (Nd0.33Sm0.33Gd0.33)Ba2Cu3 Oy, and (Sm0.33Eu0.33Gd0.33)Ba2Cu3 Oy. High-resolution transmission electron microscopic observations showed that there is strong compositional fluctuation in the REBa2Cu3Oy matrix, and the RE rich clusters 3-10 nm in size are distributed in the matrix, which are the candidates for pinning centers. Magnetization measurements revealed that a strongly developed fishtail is observed in all the samples. The peak position, its height, and irreversibility field is dependent on the chemical composition. The NSG-123 sample with 10 mol% Gd-211 exhibited the critical current density of 100 kAcm-2 at 77 K and 2 T for H∥c-axis.",

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AB - We have studied the effects of sub-micron Gd2BaCuO5 (Gd-211) particles on the microstructure and the magnetic properties of ternary melt-textured superconductors (Nd0.33Eu0.33Gd0.33)Ba2Cu3 Oy, (Nd0.33Sm0.33Gd0.33)Ba2Cu3 Oy, and (Sm0.33Eu0.33Gd0.33)Ba2Cu3 Oy. High-resolution transmission electron microscopic observations showed that there is strong compositional fluctuation in the REBa2Cu3Oy matrix, and the RE rich clusters 3-10 nm in size are distributed in the matrix, which are the candidates for pinning centers. Magnetization measurements revealed that a strongly developed fishtail is observed in all the samples. The peak position, its height, and irreversibility field is dependent on the chemical composition. The NSG-123 sample with 10 mol% Gd-211 exhibited the critical current density of 100 kAcm-2 at 77 K and 2 T for H∥c-axis.

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KW - Melt-textured

KW - REBaCuO

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