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Proceedings Paper

Raman spectra of Y(Pr)Ba2Cu3O6+delta thin films and oxygen disorder
Author(s): Eric Faulques; C. Gonzalez
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Paper Abstract

The materials used in this study are a (perpendicular) or c (perpendicular) oriented thin films of Y(Pr)Ba2Cu3O6+(delta ) with thickness of 1400 angstrom to 3000 angstrom. The temperature dependence of the Raman spectrum of YBa2Cu3O6.9 (YBCO) is presented using the excitation wavelength at 676.4 nm (red line). At 10 K all phonons exhibit Fano asymmetries. The phonon frequency and the linewidth of the bands at 335 and 449 cm-1 show anomalous temperature dependence in the vicinity of Tc. Thin films with oxygen stoichiometry near to (delta) equals 0.9 are then investigated. Correlation is made between the appearance of strong Raman features at 230 and 596 cm-1 and the oxygen disorder of the films.

Paper Details

Date Published: 10 June 1996
PDF: 12 pages
Proc. SPIE 2696, Spectroscopic Studies of Superconductors, (10 June 1996); doi: 10.1117/12.241804
Show Author Affiliations
Eric Faulques, Institut des Materiaux de Nantes (France)
C. Gonzalez, CNET (France)

Published in SPIE Proceedings Vol. 2696:
Spectroscopic Studies of Superconductors
Ivan Bozovic; Dirk van der Marel, Editor(s)

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