Angular dependence of the peak effect and out-of-plane modulated compositional order in melt-processed (Sm, Eu, Gd)Ba2Cu 3O7-δ superconductors

A. Hu, N. Chikumoto, H. Zhou, N. Sakai, M. Murakami, I. Hirabayshi

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

The angular dependence of the peak effect was investigated in melt-processed (Sm, Eu, Gd)Ba2Cu3O7-δ crystals by rotating the angle, θ, between the applied fields and the ab-plane. The peak field, at which the magnetic moment shows an unusual maximum, shifted to a higher field, associated with a systematical decrease of the peak amplitude with θ inclining to zero. For Ba ∥ ab, the peak effect displayed the highest peak field and the minimum peak height. Meanwhile, out-of-plane ordering of compositional modulation was unveiled by transmission electron microscopy. Such a three-dimensional distribution of chemical fluctuation could account for the angular dependence of the peak effect.

Original languageEnglish
Pages (from-to)S131-S135
JournalSuperconductor Science and Technology
Volume18
Issue number2
DOIs
Publication statusPublished - 2005 Feb 1

ASJC Scopus subject areas

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

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