Influence of initial composition on the flux pinning of melt-processed (SmxEu1-x)Ba2Cu3O7-δ

A. Hu; N. Sakai; D. X. Huang; N. Chikumoto; M. Murakami

doi:10.1016/S0921-4534(02)01523-X

Influence of initial composition on the flux pinning of melt-processed (Sm_xEu_1-x)Ba₂Cu₃O_7-δ

A. Hu, N. Sakai, D. X. Huang, N. Chikumoto, M. Murakami

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

2 Citations (Scopus)

Abstract

Superconducting properties of melt-processed (Sm_xEu_1-x)Ba₂Cu₃O_7-δ were investigated by varying the Sm/Eu ratio in the initial composition while maintaining the mixture of RE123 and RE₂BaO₄ in a molar ratio of 1:0.15 along the REBa₂Cu₃O_7-δ-RE₂BaO₄ line (RE = Sm and Eu). A suppression of the height of peak effect and the shift of the peak position to higher fields concurred with increasing Eu concentration. Such a systematical variation was ascribed to a narrowing compositional fluctuation. Experiments also unveiled a dramatic enhancement of the irreversibility line for the sample with the higher peak field, which supported the fact that chemical modulation was a dominant pinning in high fields.

Original language	English
Pages (from-to)	692-696
Number of pages	5
Journal	Physica C: Superconductivity and its applications
Volume	378-381
Issue number	PART 1
DOIs	https://doi.org/10.1016/S0921-4534(02)01523-X
Publication status	Published - 2002 Oct 1
Externally published	Yes

Keywords

Compositional fluctuation
Irreversibility line
Peak effect

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)01523-X

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title = "Influence of initial composition on the flux pinning of melt-processed (SmxEu1-x)Ba2Cu3O7-δ ",

abstract = "Superconducting properties of melt-processed (SmxEu1-x)Ba2Cu3O7-δ were investigated by varying the Sm/Eu ratio in the initial composition while maintaining the mixture of RE123 and RE2BaO4 in a molar ratio of 1:0.15 along the REBa2Cu3O7-δ-RE2BaO4 line (RE = Sm and Eu). A suppression of the height of peak effect and the shift of the peak position to higher fields concurred with increasing Eu concentration. Such a systematical variation was ascribed to a narrowing compositional fluctuation. Experiments also unveiled a dramatic enhancement of the irreversibility line for the sample with the higher peak field, which supported the fact that chemical modulation was a dominant pinning in high fields.",

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T1 - Influence of initial composition on the flux pinning of melt-processed (SmxEu1-x)Ba2Cu3O7-δ

AU - Hu, A.

AU - Sakai, N.

AU - Huang, D. X.

AU - Chikumoto, N.

AU - Murakami, M.

PY - 2002/10/1

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N2 - Superconducting properties of melt-processed (SmxEu1-x)Ba2Cu3O7-δ were investigated by varying the Sm/Eu ratio in the initial composition while maintaining the mixture of RE123 and RE2BaO4 in a molar ratio of 1:0.15 along the REBa2Cu3O7-δ-RE2BaO4 line (RE = Sm and Eu). A suppression of the height of peak effect and the shift of the peak position to higher fields concurred with increasing Eu concentration. Such a systematical variation was ascribed to a narrowing compositional fluctuation. Experiments also unveiled a dramatic enhancement of the irreversibility line for the sample with the higher peak field, which supported the fact that chemical modulation was a dominant pinning in high fields.

AB - Superconducting properties of melt-processed (SmxEu1-x)Ba2Cu3O7-δ were investigated by varying the Sm/Eu ratio in the initial composition while maintaining the mixture of RE123 and RE2BaO4 in a molar ratio of 1:0.15 along the REBa2Cu3O7-δ-RE2BaO4 line (RE = Sm and Eu). A suppression of the height of peak effect and the shift of the peak position to higher fields concurred with increasing Eu concentration. Such a systematical variation was ascribed to a narrowing compositional fluctuation. Experiments also unveiled a dramatic enhancement of the irreversibility line for the sample with the higher peak field, which supported the fact that chemical modulation was a dominant pinning in high fields.

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