Spatial variation of superconducting properties and compositional fluctuation in large melt-processed (Sm-Eu)123 single domains

A. Hu; N. Sakai; M. Murakami

doi:10.1016/S0921-4534(03)01217-6

Spatial variation of superconducting properties and compositional fluctuation in large melt-processed (Sm-Eu)123 single domains

A. Hu, N. Sakai, M. Murakami

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

3 Citations (Scopus)

Abstract

Large size (Sm_0.5Eu_0.5)Ba₂Cu ₃O_7-δ single domains were grown in air via a hot-seeding melt process. Superconducting properties were found to gradually enhance as the grain growth proceeds, in that the grown grain displayed low T_c and J_c values at the initial crystallization in the top center of single domain while exhibiting high T_c and J _c in the edge section. The experiment unveiled that this was mainly induced by different RE-Ba substitution levels (RE=Sm and Eu). Such a spatial modulation of composition could be effectively suppressed by employing a fast cooling in the initial growth. The modified melt growth significantly improved the field trapping ability of single domain bulks.

Original language	English
Pages (from-to)	571-574
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)01217-6
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

(SmEu)BaCuO
Compositional fluctuation
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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10.1016/S0921-4534(03)01217-6

Cite this

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title = "Spatial variation of superconducting properties and compositional fluctuation in large melt-processed (Sm-Eu)123 single domains",

abstract = "Large size (Sm0.5Eu0.5)Ba2Cu 3O7-δ single domains were grown in air via a hot-seeding melt process. Superconducting properties were found to gradually enhance as the grain growth proceeds, in that the grown grain displayed low Tc and Jc values at the initial crystallization in the top center of single domain while exhibiting high Tc and J c in the edge section. The experiment unveiled that this was mainly induced by different RE-Ba substitution levels (RE=Sm and Eu). Such a spatial modulation of composition could be effectively suppressed by employing a fast cooling in the initial growth. The modified melt growth significantly improved the field trapping ability of single domain bulks.",

keywords = "(SmEu)BaCuO, Compositional fluctuation, Melt processing",

author = "A. Hu and N. Sakai and M. Murakami",

note = "Funding Information: This work is supported by the New Energy and Industrial Technology Development Organization (NEDO) as Collaborative Research and Development of Fundamental Technologies for Superconductivity Applications. A.H. thanks the NEDO for providing a research fellowship. Copyright: Copyright 2008 Elsevier B.V., All rights reserved.; 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)01217-6",

language = "English",

volume = "392-396",

pages = "571--574",

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

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T1 - Spatial variation of superconducting properties and compositional fluctuation in large melt-processed (Sm-Eu)123 single domains

AU - Hu, A.

AU - Sakai, N.

AU - Murakami, M.

N1 - Funding Information: This work is supported by the New Energy and Industrial Technology Development Organization (NEDO) as Collaborative Research and Development of Fundamental Technologies for Superconductivity Applications. A.H. thanks the NEDO for providing a research fellowship. Copyright: Copyright 2008 Elsevier B.V., All rights reserved.

PY - 2003/10

Y1 - 2003/10

N2 - Large size (Sm0.5Eu0.5)Ba2Cu 3O7-δ single domains were grown in air via a hot-seeding melt process. Superconducting properties were found to gradually enhance as the grain growth proceeds, in that the grown grain displayed low Tc and Jc values at the initial crystallization in the top center of single domain while exhibiting high Tc and J c in the edge section. The experiment unveiled that this was mainly induced by different RE-Ba substitution levels (RE=Sm and Eu). Such a spatial modulation of composition could be effectively suppressed by employing a fast cooling in the initial growth. The modified melt growth significantly improved the field trapping ability of single domain bulks.

AB - Large size (Sm0.5Eu0.5)Ba2Cu 3O7-δ single domains were grown in air via a hot-seeding melt process. Superconducting properties were found to gradually enhance as the grain growth proceeds, in that the grown grain displayed low Tc and Jc values at the initial crystallization in the top center of single domain while exhibiting high Tc and J c in the edge section. The experiment unveiled that this was mainly induced by different RE-Ba substitution levels (RE=Sm and Eu). Such a spatial modulation of composition could be effectively suppressed by employing a fast cooling in the initial growth. The modified melt growth significantly improved the field trapping ability of single domain bulks.

KW - (SmEu)BaCuO

KW - Compositional fluctuation

KW - Melt processing

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DO - 10.1016/S0921-4534(03)01217-6

M3 - Conference article

AN - SCOPUS:0042784828

SN - 0921-4534

VL - 392-396

SP - 571

EP - 574

JO - Physica C: Superconductivity and its Applications

JF - Physica C: Superconductivity and its Applications

IS - PART 1

T2 - Proceedings of the 15th International Symposium on Superconduc

Y2 - 11 November 2002 through 13 November 2002

ER -

Spatial variation of superconducting properties and compositional fluctuation in large melt-processed (Sm-Eu)123 single domains

Abstract

Keywords

ASJC Scopus subject areas

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