Flux pinning and orientation control of large grain LREBa 2Cu3Oy

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Abstract

The ternary high-Tc superconductor (Nd0.33, Eu 0.39, Gd0.27)Ba2Cu3Oy NEG-123 doped by 5 mol% of the nonsuperconducting secondary phase (Nd 0.33, Eu0.33, Gd0.33)2BaCuO 5 NEG-211 was prepared by oxygen controlled melt growth (OCMG) process using MgO seeds. Various contents of ZnO up to 0.07 mol% were added. At the ZnO concentration around 0.035 mol%, a substantial reduction of liquid phase loss was observed, accompanied with a perfect facet line up to the bottom of the sample, with c-axis reflection plane. Magnetization measurements showed that at this optimum ZnO addition the superconducting transition temperature was slightly depressed. On the other hand, flux pinning performance around the secondary peak, observed at liquid nitrogen temperature, was continually improved with increasing ZnO content up to 0.035 mol%. It was found that the optimum content of ZnO is crucial for flux pining enhancement and orientation control of MgO seeded melt-textured NEG-123 system.

Original languageEnglish
Article number104
Pages (from-to)417-420
Number of pages4
JournalJournal of Physics: Conference Series
Volume43
Issue number1
DOIs
Publication statusPublished - 2006 Jun 1

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flux pinning
liquid nitrogen
seeds
flat surfaces
liquid phases
transition temperature
magnetization
augmentation
oxygen
temperature

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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Flux pinning and orientation control of large grain LREBa 2Cu3Oy. / Miryala, Muralidhar; Sakai, Naomichi; Jirsa, M.; Murakami, Masato; Hirabayashi, I.

In: Journal of Physics: Conference Series, Vol. 43, No. 1, 104, 01.06.2006, p. 417-420.

Research output: Contribution to journalArticle

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