Effect of CeO2 and Pt doping on the microstructure of Nd-Sm123 bulk superconductor fabricated in air

J. Yoshioka; K. Iida; M. Murakami

doi:10.1088/0953-2048/15/5/327

Effect of CeO₂ and Pt doping on the microstructure of Nd-Sm123 bulk superconductor fabricated in air

J. Yoshioka, K. Iida, M. Murakami

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

1 Citation (Scopus)

Abstract

We have succeeded in fabricating a (Nd, Sm)-Ba-Cu-O bulk superconductor with high T_c and sharp superconducting transition using Ba-rich (Nd_0.8, Sm_0.2)_3.6Ba_2.4Cu_1.8O_9.6 (NS422ss) powder in air. The magnetic property of this melt-textured bulk was similar in T_c and superconducting transition to the bulk with the same nominal composition melt-textured under low oxygen partial pressure (pO₂). The samples also showed relatively high J_c values with the secondary peak effect, although J_c values were slightly lower than the samples melt-textured in low pO₂. It was also found that CeO₂ and Pt doping was very effective in improving J_c values even for Nd-Sm123 bulk melt textured in air.

Original language	English
Pages (from-to)	778-780
Number of pages	3
Journal	Superconductor Science and Technology
Volume	15
Issue number	5
DOIs	https://doi.org/10.1088/0953-2048/15/5/327
Publication status	Published - 2002 May 1
Externally published	Yes

ASJC Scopus subject areas

Ceramics and Composites
Condensed Matter Physics
Metals and Alloys
Electrical and Electronic Engineering
Materials Chemistry

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abstract = "We have succeeded in fabricating a (Nd, Sm)-Ba-Cu-O bulk superconductor with high Tc and sharp superconducting transition using Ba-rich (Nd0.8, Sm0.2)3.6Ba2.4Cu1.8O9.6 (NS422ss) powder in air. The magnetic property of this melt-textured bulk was similar in Tc and superconducting transition to the bulk with the same nominal composition melt-textured under low oxygen partial pressure (pO2). The samples also showed relatively high Jc values with the secondary peak effect, although Jc values were slightly lower than the samples melt-textured in low pO2. It was also found that CeO2 and Pt doping was very effective in improving Jc values even for Nd-Sm123 bulk melt textured in air.",

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