Studies of flux pinning behaviour in melt-processed ternary (Nd-Eu-Gd)Ba2Cu3Oy superconductors

A. K. Pradhan; M. Muralidhar; M. Murakami; N. Koshizuka

doi:10.1088/0953-2048/13/6/326

Studies of flux pinning behaviour in melt-processed ternary (Nd-Eu-Gd)Ba₂Cu₃O_y superconductors

A. K. Pradhan, M. Muralidhar, M. Murakami, N. Koshizuka

Research output: Contribution to journal › Conference article › peer-review

6 Citations (Scopus)

Abstract

The flux pinning behaviour of ternary melt-processed (Nd-Eu-Gd)Ba₂Cu₃O_y superconductors is studied with various second-phase defect concentrations using magnetotransport and magnetization measurements. A pronounced field-induced bump feature in the resistivity was observed. The dissipation was found to be thermal activation type. The current-voltage (I-V) characteristics over the whole transition temperature regime show a linear flux-flow type behaviour at high fields that favours an increase in viscosity in the liquid phase. However, I-V curves show a change of curvature at low field. The Nd/Ba substitution sites along with second-phase particles refined by the addition of a small amount of Pt are basically responsible for high flux pinning.

Original language	English
Pages (from-to)	761-765
Number of pages	5
Journal	Superconductor Science and Technology
Volume	13
Issue number	6
DOIs	https://doi.org/10.1088/0953-2048/13/6/326
Publication status	Published - 2000 Jun 1
Externally published	Yes
Event	The 2nd International Workshop on the Processing and Applications of Superconducting (RE)CBO Large Grain Materials - Morioka, Jpn Duration: 1999 Oct 19 → 1999 Oct 22

ASJC Scopus subject areas

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

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10.1088/0953-2048/13/6/326

Cite this

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title = "Studies of flux pinning behaviour in melt-processed ternary (Nd-Eu-Gd)Ba2Cu3Oy superconductors",

abstract = "The flux pinning behaviour of ternary melt-processed (Nd-Eu-Gd)Ba2Cu3Oy superconductors is studied with various second-phase defect concentrations using magnetotransport and magnetization measurements. A pronounced field-induced bump feature in the resistivity was observed. The dissipation was found to be thermal activation type. The current-voltage (I-V) characteristics over the whole transition temperature regime show a linear flux-flow type behaviour at high fields that favours an increase in viscosity in the liquid phase. However, I-V curves show a change of curvature at low field. The Nd/Ba substitution sites along with second-phase particles refined by the addition of a small amount of Pt are basically responsible for high flux pinning.",

author = "Pradhan, {A. K.} and M. Muralidhar and M. Murakami and N. Koshizuka",

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T1 - Studies of flux pinning behaviour in melt-processed ternary (Nd-Eu-Gd)Ba2Cu3Oy superconductors

AU - Pradhan, A. K.

AU - Muralidhar, M.

AU - Murakami, M.

AU - Koshizuka, N.

PY - 2000/6/1

Y1 - 2000/6/1

N2 - The flux pinning behaviour of ternary melt-processed (Nd-Eu-Gd)Ba2Cu3Oy superconductors is studied with various second-phase defect concentrations using magnetotransport and magnetization measurements. A pronounced field-induced bump feature in the resistivity was observed. The dissipation was found to be thermal activation type. The current-voltage (I-V) characteristics over the whole transition temperature regime show a linear flux-flow type behaviour at high fields that favours an increase in viscosity in the liquid phase. However, I-V curves show a change of curvature at low field. The Nd/Ba substitution sites along with second-phase particles refined by the addition of a small amount of Pt are basically responsible for high flux pinning.

AB - The flux pinning behaviour of ternary melt-processed (Nd-Eu-Gd)Ba2Cu3Oy superconductors is studied with various second-phase defect concentrations using magnetotransport and magnetization measurements. A pronounced field-induced bump feature in the resistivity was observed. The dissipation was found to be thermal activation type. The current-voltage (I-V) characteristics over the whole transition temperature regime show a linear flux-flow type behaviour at high fields that favours an increase in viscosity in the liquid phase. However, I-V curves show a change of curvature at low field. The Nd/Ba substitution sites along with second-phase particles refined by the addition of a small amount of Pt are basically responsible for high flux pinning.

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Studies of flux pinning behaviour in melt-processed ternary (Nd-Eu-Gd)Ba₂Cu₃O_y superconductors

Abstract

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