Improved superconducting properties due to Ag2O addition in NEG-123

M. Muralidhar; M. Murakami

doi:10.1016/S0921-4534(01)00359-8

Improved superconducting properties due to Ag₂O addition in NEG-123

M. Muralidhar, M. Murakami

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

6 Citations (Scopus)

Abstract

We prepared NEG + 10 mol% NEG-211 + 0.5 mol% Pt with 0-50 wt.% Ag₂O, which are subjected to the oxygen-controlled melt-growth process. Microstructural observation showed that fine Ag particles are dispersed at lower Ag₂O contents. At higher contents, Ag particles exhibited various sizes and shapes and segregated mostly in the vicinity of microcracks and pores. The irreversibility field increased with Ag₂O content up to 20 wt.%, and even with 50 wt.% the magnetization loop was open at 77 K and 7 T. In the sample with 20 wt.% of Ag₂O, a large critical current density of 10 kA cm^-2 was recorded even at 7 T and 77 K with the field applied parallel to the c-axis of the sample.

Original language	English
Pages (from-to)	657-660
Number of pages	4
Journal	Physica C: Superconductivity and its applications
Volume	357-360
Issue number	SUPPL. 2
DOIs	https://doi.org/10.1016/S0921-4534(01)00359-8
Publication status	Published - 2001 Aug
Externally published	Yes

Keywords

Critical current density
Flux pinning
LRE-BaCuO
Melt-textured materials
Microstructure

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(01)00359-8

Cite this

@article{490fdabc06b94dcd96de3a1136c8a136,

title = "Improved superconducting properties due to Ag2O addition in NEG-123",

abstract = "We prepared NEG + 10 mol% NEG-211 + 0.5 mol% Pt with 0-50 wt.% Ag2O, which are subjected to the oxygen-controlled melt-growth process. Microstructural observation showed that fine Ag particles are dispersed at lower Ag2O contents. At higher contents, Ag particles exhibited various sizes and shapes and segregated mostly in the vicinity of microcracks and pores. The irreversibility field increased with Ag2O content up to 20 wt.%, and even with 50 wt.% the magnetization loop was open at 77 K and 7 T. In the sample with 20 wt.% of Ag2O, a large critical current density of 10 kA cm-2 was recorded even at 7 T and 77 K with the field applied parallel to the c-axis of the sample.",

keywords = "Critical current density, Flux pinning, LRE-BaCuO, Melt-textured materials, Microstructure",

author = "M. Muralidhar 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 Technology for Superconductor applications project under the new sunshine program administrated by the Agency of Industrial Science and Technology MITI of Japan. MMD thankful to the NEDO Govt. of Japan for providing the fellowship. ",

year = "2001",

month = aug,

doi = "10.1016/S0921-4534(01)00359-8",

language = "English",

volume = "357-360",

pages = "657--660",

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

issn = "0921-4534",

publisher = "Elsevier",

number = "SUPPL. 2",

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TY - JOUR

T1 - Improved superconducting properties due to Ag2O addition in NEG-123

AU - Muralidhar, M.

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 Technology for Superconductor applications project under the new sunshine program administrated by the Agency of Industrial Science and Technology MITI of Japan. MMD thankful to the NEDO Govt. of Japan for providing the fellowship.

PY - 2001/8

Y1 - 2001/8

N2 - We prepared NEG + 10 mol% NEG-211 + 0.5 mol% Pt with 0-50 wt.% Ag2O, which are subjected to the oxygen-controlled melt-growth process. Microstructural observation showed that fine Ag particles are dispersed at lower Ag2O contents. At higher contents, Ag particles exhibited various sizes and shapes and segregated mostly in the vicinity of microcracks and pores. The irreversibility field increased with Ag2O content up to 20 wt.%, and even with 50 wt.% the magnetization loop was open at 77 K and 7 T. In the sample with 20 wt.% of Ag2O, a large critical current density of 10 kA cm-2 was recorded even at 7 T and 77 K with the field applied parallel to the c-axis of the sample.

AB - We prepared NEG + 10 mol% NEG-211 + 0.5 mol% Pt with 0-50 wt.% Ag2O, which are subjected to the oxygen-controlled melt-growth process. Microstructural observation showed that fine Ag particles are dispersed at lower Ag2O contents. At higher contents, Ag particles exhibited various sizes and shapes and segregated mostly in the vicinity of microcracks and pores. The irreversibility field increased with Ag2O content up to 20 wt.%, and even with 50 wt.% the magnetization loop was open at 77 K and 7 T. In the sample with 20 wt.% of Ag2O, a large critical current density of 10 kA cm-2 was recorded even at 7 T and 77 K with the field applied parallel to the c-axis of the sample.

KW - Critical current density

KW - Flux pinning

KW - LRE-BaCuO

KW - Melt-textured materials

KW - Microstructure

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U2 - 10.1016/S0921-4534(01)00359-8

DO - 10.1016/S0921-4534(01)00359-8

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VL - 357-360

SP - 657

EP - 660

JO - Physica C: Superconductivity and its applications

JF - Physica C: Superconductivity and its applications

IS - SUPPL. 2

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