Microstructure and flux pinning of OCMG processed (Sm0.33Eu 0.33Gd0.33)Ba2Cu3Oy with sub-micron Gd2BaCuO5 second phase particles

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

doi:10.1016/S0921-4534(03)00997-3

Microstructure and flux pinning of OCMG processed (Sm_0.33Eu _0.33Gd_0.33)Ba₂Cu₃O_y with sub-micron Gd₂BaCuO₅ second phase particles

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

Research output: Contribution to journal › Conference article › peer-review

4 Citations (Scopus)

Abstract

We present study of microstructure and magnetic properties of bulk melt-textured (Sm_0.33Eu_0.33Gd_0.33)Ba ₂Cu₃O_y "SEG-123" superconductors with 30 mol% of fine Gd-211 particles. To improve flux pinning performance at 77 K, Gd-211 particles of various sizes were added to the SEG-123 matrix before melt-texture growth. Scanning electron microscopy showed that the homogeneity of 211 particle dispersion improved with increasing sub-micron size of initially added 211 powder. At the same time, the self-field critical current density, J_c improved and reached 107 kA/cm² at 77 K (H_a∥c-axis). The size of Gd-211 particles did not affect pinning force density in high fields.

Original language	English
Pages (from-to)	619-622
Number of pages	4
Journal	Physica C: Superconductivity and its applications
Volume	392-396
Issue number	PART 1
DOIs	https://doi.org/10.1016/S0921-4534(03)00997-3
Publication status	Published - 2003 Oct
Externally published	Yes
Event	Proceedings of the 15th International Symposium on Superconduc - Yokohama, Japan Duration: 2002 Nov 11 → 2002 Nov 13

Keywords

Flux-pinning for material index
LRE-BaCuO
Melt-textured
SEG-123
Ultra-fine Gd-211

ASJC Scopus subject areas

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

Access to Document

10.1016/S0921-4534(03)00997-3

Cite this

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title = "Microstructure and flux pinning of OCMG processed (Sm0.33Eu 0.33Gd0.33)Ba2Cu3Oy with sub-micron Gd2BaCuO5 second phase particles",

abstract = "We present study of microstructure and magnetic properties of bulk melt-textured (Sm0.33Eu0.33Gd0.33)Ba 2Cu3Oy {"}SEG-123{"} superconductors with 30 mol% of fine Gd-211 particles. To improve flux pinning performance at 77 K, Gd-211 particles of various sizes were added to the SEG-123 matrix before melt-texture growth. Scanning electron microscopy showed that the homogeneity of 211 particle dispersion improved with increasing sub-micron size of initially added 211 powder. At the same time, the self-field critical current density, Jc improved and reached 107 kA/cm2 at 77 K (Ha∥c-axis). The size of Gd-211 particles did not affect pinning force density in high fields.",

keywords = "Flux-pinning for material index, LRE-BaCuO, Melt-textured, SEG-123, Ultra-fine Gd-211",

author = "M. Muralidhar and M. Jirsa and N. Sakai and M. Murakami",

note = "Funding Information: This work was supported by New Energy and Industrial Technology Development Organization (NEDO) as a part of its Research and Development of Fundamental Technologies for Superconductor Applications. M.J. acknowledges support from grant no. A1010919/99 of GA ASCR.; Proceedings of the 15th International Symposium on Superconduc ; Conference date: 11-11-2002 Through 13-11-2002",

year = "2003",

month = oct,

doi = "10.1016/S0921-4534(03)00997-3",

language = "English",

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journal = "Physica C: Superconductivity and its Applications",

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T1 - Microstructure and flux pinning of OCMG processed (Sm0.33Eu 0.33Gd0.33)Ba2Cu3Oy with sub-micron Gd2BaCuO5 second phase particles

AU - Muralidhar, M.

AU - Jirsa, M.

AU - Sakai, N.

AU - Murakami, M.

N1 - Funding Information: This work was supported by New Energy and Industrial Technology Development Organization (NEDO) as a part of its Research and Development of Fundamental Technologies for Superconductor Applications. M.J. acknowledges support from grant no. A1010919/99 of GA ASCR.

PY - 2003/10

Y1 - 2003/10

N2 - We present study of microstructure and magnetic properties of bulk melt-textured (Sm0.33Eu0.33Gd0.33)Ba 2Cu3Oy "SEG-123" superconductors with 30 mol% of fine Gd-211 particles. To improve flux pinning performance at 77 K, Gd-211 particles of various sizes were added to the SEG-123 matrix before melt-texture growth. Scanning electron microscopy showed that the homogeneity of 211 particle dispersion improved with increasing sub-micron size of initially added 211 powder. At the same time, the self-field critical current density, Jc improved and reached 107 kA/cm2 at 77 K (Ha∥c-axis). The size of Gd-211 particles did not affect pinning force density in high fields.

AB - We present study of microstructure and magnetic properties of bulk melt-textured (Sm0.33Eu0.33Gd0.33)Ba 2Cu3Oy "SEG-123" superconductors with 30 mol% of fine Gd-211 particles. To improve flux pinning performance at 77 K, Gd-211 particles of various sizes were added to the SEG-123 matrix before melt-texture growth. Scanning electron microscopy showed that the homogeneity of 211 particle dispersion improved with increasing sub-micron size of initially added 211 powder. At the same time, the self-field critical current density, Jc improved and reached 107 kA/cm2 at 77 K (Ha∥c-axis). The size of Gd-211 particles did not affect pinning force density in high fields.

KW - Flux-pinning for material index

KW - LRE-BaCuO

KW - Melt-textured

KW - SEG-123

KW - Ultra-fine Gd-211

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