Microstructure and superconducting properties of melt-processed bulk Gd123 single domain with Gd2Ba4CuMOx (M=Mo and Zr) additions

Caixuan Xu; Anming Hu; Naomichi Sakai; Mitsuru Izumi; Izumi Hirabayashi

doi:10.1063/1.2192423

Microstructure and superconducting properties of melt-processed bulk Gd123 single domain with Gd₂Ba₄CuMO_x (M=Mo and Zr) additions

Caixuan Xu, Anming Hu, Naomichi Sakai, Mitsuru Izumi, Izumi Hirabayashi

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Inclusion of the finely dispersed RE₂BaCuO₅ (RE211) enhances flux pinning in bulk REBa₂Cu₃O _7-δ. Recently, we tested the effect of Gd₂Ba ₄CuMO_x (Gd2411; M= Zr, Mo) addition on the trapped field and critical current density (J_c) in single domain of bulk GdBa ₂Cu₃O_7-δ (Gd123) with the additional amount ranging from 0.2 mol % to 20 mol %, ratio to Gd123. Around the seeding zone a novel band of the second phase distribution was observed for all Gd2411 additional levels. Second phase excess regions were followed by diluted second phase regions, those appeared alternatively, and formed an inhomogeneous band structure, while an uniform distribution of Gd211 appeared from 0.5 cm away from the seed to the edge of domain along 〈100〉/〈010〉 direction. J_c values strongly depend on the positions and the Gd2411 addition was proved to enhance J_c near the seeding site rather than edge-periphery zone of the bulk disk.

Original language	English
Title of host publication	ADVANCES IN CRYOGENIC ENGINEERING
Subtitle of host publication	Transactions of the International Cryogenic Materials Conference, ICMC, Volume 52B
Pages	779-785
Number of pages	7
DOIs	https://doi.org/10.1063/1.2192423
Publication status	Published - 2006 Mar 31
Externally published	Yes
Event	ADVANCES IN CRYOGENIC ENGINEERING: Transactions of the International Cryogenic Materials Conference, ICMC - Keystone, CO, United States Duration: 2005 Aug 29 → 2005 Sept 2

Publication series

Name	AIP Conference Proceedings
Volume	824 II
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Conference

Conference	ADVANCES IN CRYOGENIC ENGINEERING: Transactions of the International Cryogenic Materials Conference, ICMC
Country/Territory	United States
City	Keystone, CO
Period	05/8/29 → 05/9/2

Keywords

Band structure
GdBaCuMO
Spatial distribution

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1063/1.2192423

Cite this

Xu, C., Hu, A., Sakai, N., Izumi, M., & Hirabayashi, I. (2006). Microstructure and superconducting properties of melt-processed bulk Gd123 single domain with Gd₂Ba₄CuMO_x (M=Mo and Zr) additions. In ADVANCES IN CRYOGENIC ENGINEERING: Transactions of the International Cryogenic Materials Conference, ICMC, Volume 52B (pp. 779-785). (AIP Conference Proceedings; Vol. 824 II). https://doi.org/10.1063/1.2192423

Microstructure and superconducting properties of melt-processed bulk Gd123 single domain with Gd₂Ba₄CuMO_x (M=Mo and Zr) additions. / Xu, Caixuan; Hu, Anming; Sakai, Naomichi et al.

ADVANCES IN CRYOGENIC ENGINEERING: Transactions of the International Cryogenic Materials Conference, ICMC, Volume 52B. 2006. p. 779-785 (AIP Conference Proceedings; Vol. 824 II).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Xu, C, Hu, A, Sakai, N, Izumi, M & Hirabayashi, I 2006, Microstructure and superconducting properties of melt-processed bulk Gd123 single domain with Gd₂Ba₄CuMO_x (M=Mo and Zr) additions. in ADVANCES IN CRYOGENIC ENGINEERING: Transactions of the International Cryogenic Materials Conference, ICMC, Volume 52B. AIP Conference Proceedings, vol. 824 II, pp. 779-785, ADVANCES IN CRYOGENIC ENGINEERING: Transactions of the International Cryogenic Materials Conference, ICMC, Keystone, CO, United States, 05/8/29. https://doi.org/10.1063/1.2192423

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abstract = "Inclusion of the finely dispersed RE2BaCuO5 (RE211) enhances flux pinning in bulk REBa2Cu3O 7-δ. Recently, we tested the effect of Gd2Ba 4CuMOx (Gd2411; M= Zr, Mo) addition on the trapped field and critical current density (Jc) in single domain of bulk GdBa 2Cu3O7-δ (Gd123) with the additional amount ranging from 0.2 mol % to 20 mol %, ratio to Gd123. Around the seeding zone a novel band of the second phase distribution was observed for all Gd2411 additional levels. Second phase excess regions were followed by diluted second phase regions, those appeared alternatively, and formed an inhomogeneous band structure, while an uniform distribution of Gd211 appeared from 0.5 cm away from the seed to the edge of domain along 〈100〉/〈010〉 direction. Jc values strongly depend on the positions and the Gd2411 addition was proved to enhance Jc near the seeding site rather than edge-periphery zone of the bulk disk.",

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