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Anomalous Temperature Dependence of the Electric Field Gradient at the Y Site in In0.1Y0.9Ba2Cu3O9- δ
Physical Review B
  • Gary L. Catchen
  • Michael Blaszkiewicz
  • Anthony Baratta
  • Wayne Huebner, Missouri University of Science and Technology
Alternative Title
Evidence for soft vibrational modes
Abstract

Perturbed angular correlation (PAC) spectroscopy has been used to measure a well-defined static electric quadrupole interaction in a superconducting ceramic, In0.1Y0.9Ba2Cu3O9-δ. Perturbation functions, Fourier transforms, and the derived PAC parameters are given for data taken at temperatures ranging from 77 to 1070 K. Indirect evidence is presented for the occupation of the Y site by the 111In-111Cd PAC probe. The derived electric field gradients were found to increase linearly with temperature. This result suggests the presence of soft, anisotropic vibrations in the structure. Additional evidence is presented to indicate that O2--ion or O-vacancy transport may not occur in the Y coordination sphere.

Department(s)
Materials Science and Engineering
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 1988 American Physical Society (APS), All rights reserved.
Publication Date
8-1-1988
Citation Information
Gary L. Catchen, Michael Blaszkiewicz, Anthony Baratta and Wayne Huebner. "Anomalous Temperature Dependence of the Electric Field Gradient at the Y Site in In0.1Y0.9Ba2Cu3O9- δ" Physical Review B (1988)
Available at: http://works.bepress.com/wayne-huebner/12/