Ultrasonic study of oxygen related structures in Nd123 between 80 and 400 K

A. R. Anderson, M. Murakami, N. Chikumoto, G. J. Russell

研究成果: Article査読

2 被引用数 (Scopus)

抄録

This paper reports on an ultrasonic study at 130 kHz region in melt-textured Nd123, i.e. NdBa2Cu3O7-δ with different oxygen levels, i.e. δ = 0, 0.2, 0.4, 0.6, 1. Three ultrasonic attenuation peaks were identified, which were related to oxygen levels in the material. An ultrasonic attenuation peak in the 360 K region was found at higher oxygen levels, i.e. δ = 0.2, 0.4, and appeared to be a characteristic of the orthorhombic phase of the material. An ultrasonic attenuation peak in the 160 K region occurred at lower oxygen levels, i.e. δ = 0.4, 0.6, while a peak close to 320 K was found in deoxygenated Nd123. All ultrasonic attenuation peaks showed the characteristics of structural changes. This proposal is supported by ultrasonic velocity measurements which displayed discontinuities at the corresponding temperatures.

本文言語English
ページ(範囲)69-73
ページ数5
ジャーナルMaterials Science and Engineering B: Solid-State Materials for Advanced Technology
65
1
DOI
出版ステータスPublished - 1999 10 29
外部発表はい

ASJC Scopus subject areas

  • 材料科学(全般)
  • 凝縮系物理学
  • 材料力学
  • 機械工学

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