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

研究成果: Article

10 引用 (Scopus)

抄録

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.

元の言語English
ページ(範囲)665-668
ページ数4
ジャーナルPhysica C: Superconductivity and its Applications
357-360
発行部数SUPPL. 2
DOI
出版物ステータスPublished - 2001 8
外部発表Yes

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Magnetic properties
Magnetic fields
Oxygen
magnetic properties
microstructure
Microstructure
Scanning electron microscopy
critical current
current density
scanning electron microscopy
oxygen
matrices
magnetic fields

ASJC Scopus subject areas

  • Condensed Matter Physics

これを引用

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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.",
keywords = "CeO, Fine normal-conducting particles, Gd-211, High critical current density, LRE-BaCuO, Peak effect",
author = "Muralidhar Miryala and M. Jirsa and K. Iida and Masato Murakami",
year = "2001",
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TY - JOUR

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

AU - Miryala, Muralidhar

AU - Jirsa, M.

AU - Iida, K.

AU - Murakami, Masato

PY - 2001/8

Y1 - 2001/8

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

JF - Physica C: Superconductivity and its Applications

SN - 0921-4534

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