Evidence for a structural change in TSMG Y123 at 225 K

A. R. Anderson, M. Murakami, K. Nagashima, G. J. Russell

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

This paper reports on an ultrasonic study at 85 kHz and 485 kHz of melt-textured Y123 (YBa2Cu3O7-δ) where a possible structural change has been identified in the 220 K region. Work on oxygenated and partially deoxygenated samples has shown that the change is associated with oxygen in the samples and that the activation energy for the process is 110 meV. The conclusions are based on a qualitative and quantitative description of ultrasonic attenuation and ultrasonic velocity changes in the material as a result of slow thermal cycling and quenching experiments.

Original languageEnglish
Pages (from-to)15-20
Number of pages6
JournalPhysica C: Superconductivity and its applications
Volume306
Issue number1-2
DOIs
Publication statusPublished - 1998 Sep 10
Externally publishedYes

Keywords

  • Activation energy
  • Internal friction
  • Structural phase transition
  • Ultrasonic attenuation

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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