MICRO-RAMAN CHARACTERIZATION OF THIN FILMS AND STUDY OF THE TRANSFORMATIONS INDUCED BY A PULSED ELECTRIC-FIELD L. ABELLO, N. ROSMAN, F. GENET and G. LUCAZEAU J. Phys. IV France, 01 C7 (1991) C7-497-C7-500 DOI: 10.1051/jp4:19917131