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, Naomichi Sakai, Masato Murakami, I. Hirabayshi

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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
JournalSuperconductor Science and Technology
Volume18
Issue number2
DOIs
Publication statusPublished - 2005 Feb

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Magnetic moments
Superconducting materials
Modulation
Transmission electron microscopy
Crystals
magnetic moments
modulation
transmission electron microscopy
crystals

ASJC Scopus subject areas

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

Cite this

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title = "Angular dependence of the peak effect and out-of-plane modulated compositional order in melt-processed (Sm, Eu, Gd)Ba2Cu 3O7-δ superconductors",
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.",
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T1 - Angular dependence of the peak effect and out-of-plane modulated compositional order in melt-processed (Sm, Eu, Gd)Ba2Cu 3O7-δ superconductors

AU - Hu, A.

AU - Chikumoto, N.

AU - Zhou, H.

AU - Sakai, Naomichi

AU - Murakami, Masato

AU - Hirabayshi, I.

PY - 2005/2

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AB - 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.

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