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Depth Raman spectra and laser-induced structural and oxygenation changes in thick YBa2Cu3O7-δ films

M. BRANESCU1,* , C. NAUDIN2

Affiliation

  1. National Institute R&D of Materials Physics, P. O. Box MG-7, Bucharest, Romania
  2. Horiba JobinYvon S. A. S., 59650 Villeneuve d’Ascq, France

Abstract

We describe an experiment of inducing structural and oxygenation changes in small volumes of a thick YBa2Cu3O7-δ (YBCO) film by subjecting the film to a focused Ar laser beam used as the pump source for a depth profiling Raman scattering system. The laser-induced changes were evidenced by high spectral and spatial resolution Raman spectra taken at different depths of the film, before and after the films’ exposure. The irradiation and the measurement were done at room temperature in a regular air environment..

Keywords

YBCO films, Laser-induced oxygenation changes, Depth profiling Raman spectroscopy.

Submitted at: Nov. 15, 2006
Accepted at: March 15, 2007

Citation

M. BRANESCU, C. NAUDIN, Depth Raman spectra and laser-induced structural and oxygenation changes in thick YBa2Cu3O7-δ films, Journal of Optoelectronics and Advanced Materials Vol. 9, Iss. 3, pp. 661-663 (2007)