A new technique for pinning enhancement in ternary REBa2Cu3Oy systems

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

We have studied the effects of sub-micron Gd2BaCuO5 (Gd-211) particles on the microstructure and the magnetic properties of ternary melt-textured superconductors (Nd0.33Eu0.33Gd0.33)Ba2Cu3 Oy, (Nd0.33Sm0.33Gd0.33)Ba2Cu3 Oy, and (Sm0.33Eu0.33Gd0.33)Ba2Cu3 Oy. High-resolution transmission electron microscopic observations showed that there is strong compositional fluctuation in the REBa2Cu3Oy matrix, and the RE rich clusters 3-10 nm in size are distributed in the matrix, which are the candidates for pinning centers. Magnetization measurements revealed that a strongly developed fishtail is observed in all the samples. The peak position, its height, and irreversibility field is dependent on the chemical composition. The NSG-123 sample with 10 mol% Gd-211 exhibited the critical current density of 100 kAcm-2 at 77 K and 2 T for H∥c-axis.

Original languageEnglish
Pages (from-to)627-630
Number of pages4
JournalPhysica C: Superconductivity and its Applications
Volume378-381
Issue numberPART 1
DOIs
Publication statusPublished - 2002 Oct 1
Externally publishedYes

Fingerprint

Ternary systems
ternary systems
Superconducting materials
Magnetization
Magnetic properties
Microstructure
Electrons
augmentation
matrices
Chemical analysis
critical current
chemical composition
current density
magnetic properties
magnetization
microstructure
high resolution
electrons

Keywords

  • Critical current density
  • Flux pinning
  • Gd-211
  • Melt-textured
  • REBaCuO

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

A new technique for pinning enhancement in ternary REBa2Cu3Oy systems. / Miryala, Muralidhar; Murakami, Masato.

In: Physica C: Superconductivity and its Applications, Vol. 378-381, No. PART 1, 01.10.2002, p. 627-630.

Research output: Contribution to journalArticle

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