Influence of combined Pt and CeO2 additions on microstructure and magnetic properties in (Nd, Eu, Gd)-Ba-Cu-O

M. Muralidhar; M. Jirsa; S. Nariki; M. Murakami

doi:10.1088/0953-2048/14/10/305

Influence of combined Pt and CeO₂ additions on microstructure and magnetic properties in (Nd, Eu, Gd)-Ba-Cu-O

M. Muralidhar, M. Jirsa, S. Nariki, M. Murakami

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

18 Citations (Scopus)

Abstract

We studied the effect of the combined addition of Pt and CeO₂ on the dispersion of secondary phase Gd₂BaCuO₅ (Gd-211) particles in melt-processed (Nd_0.33Eu_0.33Gd_0.33)Ba₂Cu ₃O_y (NEG-123) by varying the CeO₂ content from 0 to 3%. Scanning electron microscopy revealed that submicrometre-sized Gd-211 particles were distributed uniformly throughout the NEG-123 matrix for additions of up to 2 mol% CeO₂. The critical current density (J_c) increased with increasing CeO₂ content, particularly at low magnetic fields. The zero-field J_c value reached its maximum of 100 kA cm^-2 at 77 K for 1 mol% CeO₂. An improvement in low-field J_c was attributed to the refinement of Gd-211 particles.

Original language	English
Pages (from-to)	832-838
Number of pages	7
Journal	Superconductor Science and Technology
Volume	14
Issue number	10
DOIs	https://doi.org/10.1088/0953-2048/14/10/305
Publication status	Published - 2001 Oct 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 studied the effect of the combined addition of Pt and CeO2 on the dispersion of secondary phase Gd2BaCuO5 (Gd-211) particles in melt-processed (Nd0.33Eu0.33Gd0.33)Ba2Cu 3Oy (NEG-123) by varying the CeO2 content from 0 to 3%. Scanning electron microscopy revealed that submicrometre-sized Gd-211 particles were distributed uniformly throughout the NEG-123 matrix for additions of up to 2 mol% CeO2. The critical current density (Jc) increased with increasing CeO2 content, particularly at low magnetic fields. The zero-field Jc value reached its maximum of 100 kA cm-2 at 77 K for 1 mol% CeO2. An improvement in low-field Jc was attributed to the refinement of Gd-211 particles.",

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AU - Muralidhar, M.

AU - Jirsa, M.

AU - Nariki, S.

AU - Murakami, M.

PY - 2001/10/1

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N2 - We studied the effect of the combined addition of Pt and CeO2 on the dispersion of secondary phase Gd2BaCuO5 (Gd-211) particles in melt-processed (Nd0.33Eu0.33Gd0.33)Ba2Cu 3Oy (NEG-123) by varying the CeO2 content from 0 to 3%. Scanning electron microscopy revealed that submicrometre-sized Gd-211 particles were distributed uniformly throughout the NEG-123 matrix for additions of up to 2 mol% CeO2. The critical current density (Jc) increased with increasing CeO2 content, particularly at low magnetic fields. The zero-field Jc value reached its maximum of 100 kA cm-2 at 77 K for 1 mol% CeO2. An improvement in low-field Jc was attributed to the refinement of Gd-211 particles.

AB - We studied the effect of the combined addition of Pt and CeO2 on the dispersion of secondary phase Gd2BaCuO5 (Gd-211) particles in melt-processed (Nd0.33Eu0.33Gd0.33)Ba2Cu 3Oy (NEG-123) by varying the CeO2 content from 0 to 3%. Scanning electron microscopy revealed that submicrometre-sized Gd-211 particles were distributed uniformly throughout the NEG-123 matrix for additions of up to 2 mol% CeO2. The critical current density (Jc) increased with increasing CeO2 content, particularly at low magnetic fields. The zero-field Jc value reached its maximum of 100 kA cm-2 at 77 K for 1 mol% CeO2. An improvement in low-field Jc was attributed to the refinement of Gd-211 particles.

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Influence of combined Pt and CeO₂ additions on microstructure and magnetic properties in (Nd, Eu, Gd)-Ba-Cu-O

Abstract

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