Инд. авторы:	Ovsyuk N.N.
Заглавие:	Studying the initial stage of nucleation with low-frequency Raman scattering
Библ. ссылка:	Ovsyuk N.N. Studying the initial stage of nucleation with low-frequency Raman scattering // EPL. - 2010. - Vol.91. - Iss. 2. - Art.26001. - ISSN 0295-5075. - EISSN 1286-4854.
Внешние системы:	DOI: 10.1209/0295-5075/91/26001; РИНЦ: 16875189; SCOPUS: 2-s2.0-78751644312;
Реферат:	eng: The objective of this paper is to show that low-frequency Raman scattering appears to be a sensitive method for the investigation of the initial stage of nucleation in multi- and monocomponent systems. In the case of the mono-component systems, when the crystalline nuclei do not have an acoustic mismatch as compared to the amorphous matrix, we cannot observe their surface vibrations, but we can make use of the fact that in nucleation there is a jump in a structure correlation length. This results in a sharp decrease in contribution to the density of the acoustic vibration states because of decreasing the concentration of structural correlations on which acoustic phonons are localized. In addition, low-frequency Raman spectroscopy may be useful in the research into the phase transformation in materials for phase-change memories. Copyright © 2010 EPLA.
Издано:	2010
Физ. характеристика:	26001
Цитирование:	1. Lamb H., Proc. London Math. Soc., 13 (1882) 187. 2. Duval E., Boukenter A. and Champagnon B., Phys. Rev. Lett., 56 (1986) 2052. 3. Ovsyuk N. N. and Novikov V. N., Phys. Rev. B, 53 (1996) 3113. 4. Champagnon B., Boukenter A. and Duval E., J. Non-Cryst. Solids, 94 (1987) 216. 5. Brodsky M. H., in Light Scattering in Solids, edited by Cardona M. (Springer, New York) 1975, p. 208. 6. Testardi L. R. and Hauser J. J., Solid State Commun., 21 (1977) 1039. 7. Veprek S., Iqbal Z. and Sarott F.-A., Philos. Mag. B, 45 (1982) 137. 8. Gregora I., Champagnon B. and Halimaoni A., J. Appl. Phys., 75 (1994) 3034. 9. Shucker R. and Gammon R. W., Phys. Rev. Lett., 25 (1970) 222. 10. Shimada T., Katayama Y., Nakagawa K., Matsuhara H., Migitaka M. and Muruyama E., J. Non-Cryst. Solids, 59-60 (1983) 783. 11. Ovsyuk N. N. and Novikov V. N., Phys. Rev. B, 57 (1998) 14615.