Raman scattering study of glass crystallization kinetics |
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Authors: | M. Balkanski E. Haro G.P. Espinosa J.C. Phillips |
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Affiliation: | 1. Laboratoire de Physique des Solides de l''Universite Pierre et Marie Curie, 75230 Paris, Cedex 05, France;2. AT&T Bell Laboratories, Murray Hill, NJ 07974, U.S.A. |
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Abstract: | Laser induced glass-crystalline transition is studied by light scattering. Three significant effects are observed depending on the incident laser energy density: (i) Spectral band narrowing indicating cluster enlargement constitutes a precursor effect, (ii) an intensity increase effect indicates a rapid rise of the density of clusters attaining microcrystalline size and (iii) a dynamical reversal effect indicative of glass-crystalline instability. Cluster volume and crystallization appear as separate but related threshold phenomena. |
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