Top-seeded infiltration growth of Y-Ba-Cu-O bulk superconductors

S. Umakoshi; Y. Ikeda; A. Wongsatanawarid; C. J. Kim; M. Murakami

doi:10.1016/j.physc.2011.05.070

Top-seeded infiltration growth of Y-Ba-Cu-O bulk superconductors

S. Umakoshi, Y. Ikeda, A. Wongsatanawarid, C. J. Kim, M. Murakami

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

17 Citations (Scopus)

Abstract

A top-seeded melt-growth (TSMG) process is widely used to fabricate single domain YBa₂Cu₃O_y (Y-Ba-Cu-O) bulk superconductors. Pores are often found in the TSMG-processed Y-Ba-Cu-O samples due to the oxygen gas evolution during the molten stage. Recently developed liquid infiltration growth (LIG) process is known to be effective in suppressing the pore evolution and in refining the size of Y₂BaCuO₅ (Y211) particles dispersed in YBa₂Cu₃O_y matrix. The LIG process utilizes the liquid (Ba₃Cu₅O₈) infiltration into a pre- sintered Y211 contact and slow cooling through a peritectic temperature. In this study, we fabricated bulk Y-Ba-Cu-O superconductors by the LIG process combined with top-seeding with SmBa ₂Cu₃O_y seed and confirmed that a single-domain bulk can be produced. Trapped field measurements however showed that some distortion in the field distribution was observed in the region near the seed crystal, which was attributed to Y211 density and its relatively large size.

Original language	English
Pages (from-to)	843-845
Number of pages	3
Journal	Physica C: Superconductivity and its applications
Volume	471
Issue number	21-22
DOIs	https://doi.org/10.1016/j.physc.2011.05.070
Publication status	Published - 2011 Nov 1

Keywords

Bulk YBCO
Liquid infiltration growth
YO additive

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/j.physc.2011.05.070

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title = "Top-seeded infiltration growth of Y-Ba-Cu-O bulk superconductors",

abstract = "A top-seeded melt-growth (TSMG) process is widely used to fabricate single domain YBa2Cu3Oy (Y-Ba-Cu-O) bulk superconductors. Pores are often found in the TSMG-processed Y-Ba-Cu-O samples due to the oxygen gas evolution during the molten stage. Recently developed liquid infiltration growth (LIG) process is known to be effective in suppressing the pore evolution and in refining the size of Y2BaCuO5 (Y211) particles dispersed in YBa2Cu3Oy matrix. The LIG process utilizes the liquid (Ba3Cu5O8) infiltration into a pre- sintered Y211 contact and slow cooling through a peritectic temperature. In this study, we fabricated bulk Y-Ba-Cu-O superconductors by the LIG process combined with top-seeding with SmBa 2Cu3Oy seed and confirmed that a single-domain bulk can be produced. Trapped field measurements however showed that some distortion in the field distribution was observed in the region near the seed crystal, which was attributed to Y211 density and its relatively large size.",

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AU - Murakami, M.

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Top-seeded infiltration growth of Y-Ba-Cu-O bulk superconductors

Abstract

Keywords

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