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 › peer-review

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
Externally published	Yes

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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@article{6a3fe268b70a4f9ca6007458d14594e4,

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.",

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

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

year = "2001",

month = aug,

day = "1",

doi = "10.1016/S0921-4534(01)00362-8",

language = "English",

volume = "357-360",

pages = "665--668",

journal = "Physica C: Superconductivity and its Applications",

issn = "0921-4534",

publisher = "Elsevier",

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}

TY - JOUR

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.

KW - CeO

KW - Fine normal-conducting particles

KW - Gd-211

KW - High critical current density

KW - LRE-BaCuO

KW - Peak effect

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DO - 10.1016/S0921-4534(01)00362-8

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VL - 357-360

SP - 665

EP - 668

JO - Physica C: Superconductivity and its Applications

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SN - 0921-4534

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