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Internal friction study of YSr2Cu3− xFexO7− δ

Authors
Journal
Solid State Communications
0038-1098
Publisher
Elsevier
Publication Date
Volume
123
Issue
11
Identifiers
DOI: 10.1016/s0038-1098(02)00378-2
Keywords
  • A. Superconductors
  • A. High-Temperature Superconductors
  • E. Ultrasonics

Abstract

Abstract The internal friction of YSr 2Cu 3− x Fe x O 7− δ ( x=0.35, 0.5 and 1) ceramics was measured by the vibrating-reed method from liquid nitrogen temperature to room temperature at kilohertz frequencies. Two mechanical energy dissipation peaks appeared around 200 and 250 K (labeled as P4 and P3, respectively) for x=0.35 sample. With increasing Fe content, P4 shifts toward higher temperature and P3 is depressed. These results provide more information on their origin of them in YBa 2Cu 3O 7− δ (Y123) and show a crucial relationship between P4 peak and the CuO x chain layers.

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