Superconductivity and transport critical current density of Nd substituted Tl-1212 phase Tl(Sr1-xNdx)2CaCu2O7

Roslan Abd. Shukor, Andrew Das Arulsamy

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Nd substituted Tl-1212 type phase high-temperature superconductors with nominal starting composition Tl(Sr1-xNdx)2CaCu2O7 (x = 0-1.0) have been prepared and characterized. The x-ray diffraction patterns indicate that Nd substitution for x = 0.1-0.5 showed a dominant 1212 phase and a 1201 minor phase. This system showed a metallic normal state behaviour for x≤0.4 and semiconducting-like behaviour for x≥0.5. Scanning electron micrographs indicate a similar grain size for the x = 0.1,0.2 and 0.3 samples which is approximately 2-4 μm. The transport critical current density, Jc, for the superconducting samples (x = 0.1, 0.2 and 0.3) at various temperatures together with a self-field approximation model indicates that the characteristic length (Lc) associated with the pinning force becomes lower with Nd substitution.

Original languageEnglish
Pages (from-to)836-839
Number of pages4
JournalJournal of Physics D: Applied Physics
Volume33
Issue number7
DOIs
Publication statusPublished - 7 Apr 2000

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Critical current density (superconductivity)
Superconductivity
critical current
Substitution reactions
superconductivity
substitutes
current density
High temperature superconductors
high temperature superconductors
Diffraction patterns
x ray diffraction
diffraction patterns
grain size
Scanning
X rays
scanning
Electrons
Chemical analysis
approximation
electrons

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Superconductivity and transport critical current density of Nd substituted Tl-1212 phase Tl(Sr1-xNdx)2CaCu2O7 . / Abd. Shukor, Roslan; Das Arulsamy, Andrew.

In: Journal of Physics D: Applied Physics, Vol. 33, No. 7, 07.04.2000, p. 836-839.

Research output: Contribution to journalArticle

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N2 - Nd substituted Tl-1212 type phase high-temperature superconductors with nominal starting composition Tl(Sr1-xNdx)2CaCu2O7 (x = 0-1.0) have been prepared and characterized. The x-ray diffraction patterns indicate that Nd substitution for x = 0.1-0.5 showed a dominant 1212 phase and a 1201 minor phase. This system showed a metallic normal state behaviour for x≤0.4 and semiconducting-like behaviour for x≥0.5. Scanning electron micrographs indicate a similar grain size for the x = 0.1,0.2 and 0.3 samples which is approximately 2-4 μm. The transport critical current density, Jc, for the superconducting samples (x = 0.1, 0.2 and 0.3) at various temperatures together with a self-field approximation model indicates that the characteristic length (Lc) associated with the pinning force becomes lower with Nd substitution.

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