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

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

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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Hu, A., Sakai, N., Huang, D. X., Chikumoto, N., & Murakami, M. (2002). Influence of initial composition on the flux pinning of melt-processed (Sm_xEu_1-x)Ba₂Cu₃O_7-δ. Physica C: Superconductivity and its applications, 378-381(PART 1), 692-696. https://doi.org/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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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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