Effect of CeO2 addition on microstructure and magnetic properties in (Nd,Eu,Gd)-Ba-Cu-O

M. Muralidhar; M. Jirsa; K. Iida; M. Murakami

doi:10.1016/S0921-4534(01)00362-8

Effect of CeO₂ addition on microstructure and magnetic properties in (Nd,Eu,Gd)-Ba-Cu-O

M. Muralidhar, M. Jirsa, K. Iida, M. Murakami

Research output: Contribution to journal › Article

11 Citations (Scopus)

Abstract

Morphology of Gd₂BaCuO₅ (Gd-211) secondary phase particles in an oxygen-controlled-melt-growth processed (Nd_0.33Eu_0.33Gd_0.33)Ba₂ Cu₃O_y + 0.5 mol% of Pt (NEG-123) was studied as a function of varying amount (0-3 mol%) of CeO₂. Optical and scanning electron microscopy revealed that sub-micron Gd-211 particles were distributed uniformly throughout the NEG-123 matrix for additions of up to 2 mol% of CeO₂. With increasing CeO₂ content the critical current density, J_c, increased particularly at low magnetic fields. The maximum value of J_c was achieved for 1 mol% CeO₂ and reached 100 kA cm^-2 at zero field and 77 K. The improved low-field critical current density is attributed to the refinement of Gd-211 particles.

Original language	English
Pages (from-to)	665-668
Number of pages	4
Journal	Physica C: Superconductivity and its applications
Volume	357-360
Issue number	SUPPL. 2
DOIs	https://doi.org/10.1016/S0921-4534(01)00362-8
Publication status	Published - 2001 Aug 1

Keywords

CeO
Fine normal-conducting particles
Gd-211
High critical current density
LRE-BaCuO
Peak effect

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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Muralidhar, M., Jirsa, M., Iida, K., & Murakami, M. (2001). Effect of CeO₂ addition on microstructure and magnetic properties in (Nd,Eu,Gd)-Ba-Cu-O. Physica C: Superconductivity and its applications, 357-360(SUPPL. 2), 665-668. https://doi.org/10.1016/S0921-4534(01)00362-8

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title = "Effect of CeO2 addition on microstructure and magnetic properties in (Nd,Eu,Gd)-Ba-Cu-O",

abstract = "Morphology of Gd2BaCuO5 (Gd-211) secondary phase particles in an oxygen-controlled-melt-growth processed (Nd0.33Eu0.33Gd0.33)Ba2 Cu3Oy + 0.5 mol% of Pt (NEG-123) was studied as a function of varying amount (0-3 mol%) of CeO2. Optical and scanning electron microscopy revealed that sub-micron Gd-211 particles were distributed uniformly throughout the NEG-123 matrix for additions of up to 2 mol% of CeO2. With increasing CeO2 content the critical current density, Jc, increased particularly at low magnetic fields. The maximum value of Jc was achieved for 1 mol% CeO2 and reached 100 kA cm-2 at zero field and 77 K. The improved low-field critical current density is attributed to the refinement of Gd-211 particles.",

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author = "M. Muralidhar and M. Jirsa and K. Iida and M. Murakami",

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T1 - Effect of CeO2 addition on microstructure and magnetic properties in (Nd,Eu,Gd)-Ba-Cu-O

AU - Muralidhar, M.

AU - Jirsa, M.

AU - Iida, K.

AU - Murakami, M.

PY - 2001/8/1

Y1 - 2001/8/1

N2 - Morphology of Gd2BaCuO5 (Gd-211) secondary phase particles in an oxygen-controlled-melt-growth processed (Nd0.33Eu0.33Gd0.33)Ba2 Cu3Oy + 0.5 mol% of Pt (NEG-123) was studied as a function of varying amount (0-3 mol%) of CeO2. Optical and scanning electron microscopy revealed that sub-micron Gd-211 particles were distributed uniformly throughout the NEG-123 matrix for additions of up to 2 mol% of CeO2. With increasing CeO2 content the critical current density, Jc, increased particularly at low magnetic fields. The maximum value of Jc was achieved for 1 mol% CeO2 and reached 100 kA cm-2 at zero field and 77 K. The improved low-field critical current density is attributed to the refinement of Gd-211 particles.

AB - Morphology of Gd2BaCuO5 (Gd-211) secondary phase particles in an oxygen-controlled-melt-growth processed (Nd0.33Eu0.33Gd0.33)Ba2 Cu3Oy + 0.5 mol% of Pt (NEG-123) was studied as a function of varying amount (0-3 mol%) of CeO2. Optical and scanning electron microscopy revealed that sub-micron Gd-211 particles were distributed uniformly throughout the NEG-123 matrix for additions of up to 2 mol% of CeO2. With increasing CeO2 content the critical current density, Jc, increased particularly at low magnetic fields. The maximum value of Jc was achieved for 1 mol% CeO2 and reached 100 kA cm-2 at zero field and 77 K. The improved low-field critical current density is attributed to the refinement of Gd-211 particles.

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KW - Fine normal-conducting particles

KW - Gd-211

KW - High critical current density

KW - LRE-BaCuO

KW - Peak effect

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