Effect of Eu/Gd ratio on flux pinning in (Nd, Eu, Gd)-Ba-Cu-O

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

We have studied the magnetic properties of (Nd0.33EuxGd(0.66-x))Ba2Cu3Oy bulk samples prepared by the oxygen-controlled melt-growth (OCMG) process, in which x ranged from 0 to 0.33. The heat treatment profiles for melt processing were determined according to the peritectic decomposition temperatures obtained from thermal analysis measurements. X-ray diffraction confirmed that the main phase is NEG-123 and the unit cell size decreases monotonously with increasing Gd content in the NEG-123 matrix, supporting the presence of a complete Nd-Eu-Gd solid solution. The sample with x = 0.08 exhibited a large critical current density (Jc) of 90 000 A cm-2 at 77 K and 1.7 T for H∥c-axis. The scaling analyses of the volume pinning force showed that the peak position in the scaling curve was dependent on the Eu/Gd ratio, which indicates that the matrix composition mainly controls the ΔTc-pinning mechanism.

Original languageEnglish
Pages (from-to)1315-1321
Number of pages7
JournalSuperconductor Science and Technology
Volume13
Issue number9
DOIs
Publication statusPublished - 2000 Sep
Externally publishedYes

Fingerprint

Flux pinning
flux pinning
Thermoanalysis
Solid solutions
Magnetic properties
Heat treatment
Oxygen
Decomposition
scaling
X ray diffraction
matrices
Processing
Chemical analysis
critical current
thermal analysis
heat treatment
solid solutions
current density
magnetic properties
decomposition

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Physics and Astronomy (miscellaneous)
  • Condensed Matter Physics

Cite this

Effect of Eu/Gd ratio on flux pinning in (Nd, Eu, Gd)-Ba-Cu-O. / Miryala, Muralidhar; Murakami, Masato.

In: Superconductor Science and Technology, Vol. 13, No. 9, 09.2000, p. 1315-1321.

Research output: Contribution to journalArticle

@article{4db2f94fef8040789d85ffb05e40d87a,
title = "Effect of Eu/Gd ratio on flux pinning in (Nd, Eu, Gd)-Ba-Cu-O",
abstract = "We have studied the magnetic properties of (Nd0.33EuxGd(0.66-x))Ba2Cu3Oy bulk samples prepared by the oxygen-controlled melt-growth (OCMG) process, in which x ranged from 0 to 0.33. The heat treatment profiles for melt processing were determined according to the peritectic decomposition temperatures obtained from thermal analysis measurements. X-ray diffraction confirmed that the main phase is NEG-123 and the unit cell size decreases monotonously with increasing Gd content in the NEG-123 matrix, supporting the presence of a complete Nd-Eu-Gd solid solution. The sample with x = 0.08 exhibited a large critical current density (Jc) of 90 000 A cm-2 at 77 K and 1.7 T for H∥c-axis. The scaling analyses of the volume pinning force showed that the peak position in the scaling curve was dependent on the Eu/Gd ratio, which indicates that the matrix composition mainly controls the ΔTc-pinning mechanism.",
author = "Muralidhar Miryala and Masato Murakami",
year = "2000",
month = "9",
doi = "10.1088/0953-2048/13/9/306",
language = "English",
volume = "13",
pages = "1315--1321",
journal = "Superconductor Science and Technology",
issn = "0953-2048",
publisher = "IOP Publishing Ltd.",
number = "9",

}

TY - JOUR

T1 - Effect of Eu/Gd ratio on flux pinning in (Nd, Eu, Gd)-Ba-Cu-O

AU - Miryala, Muralidhar

AU - Murakami, Masato

PY - 2000/9

Y1 - 2000/9

N2 - We have studied the magnetic properties of (Nd0.33EuxGd(0.66-x))Ba2Cu3Oy bulk samples prepared by the oxygen-controlled melt-growth (OCMG) process, in which x ranged from 0 to 0.33. The heat treatment profiles for melt processing were determined according to the peritectic decomposition temperatures obtained from thermal analysis measurements. X-ray diffraction confirmed that the main phase is NEG-123 and the unit cell size decreases monotonously with increasing Gd content in the NEG-123 matrix, supporting the presence of a complete Nd-Eu-Gd solid solution. The sample with x = 0.08 exhibited a large critical current density (Jc) of 90 000 A cm-2 at 77 K and 1.7 T for H∥c-axis. The scaling analyses of the volume pinning force showed that the peak position in the scaling curve was dependent on the Eu/Gd ratio, which indicates that the matrix composition mainly controls the ΔTc-pinning mechanism.

AB - We have studied the magnetic properties of (Nd0.33EuxGd(0.66-x))Ba2Cu3Oy bulk samples prepared by the oxygen-controlled melt-growth (OCMG) process, in which x ranged from 0 to 0.33. The heat treatment profiles for melt processing were determined according to the peritectic decomposition temperatures obtained from thermal analysis measurements. X-ray diffraction confirmed that the main phase is NEG-123 and the unit cell size decreases monotonously with increasing Gd content in the NEG-123 matrix, supporting the presence of a complete Nd-Eu-Gd solid solution. The sample with x = 0.08 exhibited a large critical current density (Jc) of 90 000 A cm-2 at 77 K and 1.7 T for H∥c-axis. The scaling analyses of the volume pinning force showed that the peak position in the scaling curve was dependent on the Eu/Gd ratio, which indicates that the matrix composition mainly controls the ΔTc-pinning mechanism.

UR - http://www.scopus.com/inward/record.url?scp=0034269807&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0034269807&partnerID=8YFLogxK

U2 - 10.1088/0953-2048/13/9/306

DO - 10.1088/0953-2048/13/9/306

M3 - Article

VL - 13

SP - 1315

EP - 1321

JO - Superconductor Science and Technology

JF - Superconductor Science and Technology

SN - 0953-2048

IS - 9

ER -