Reference

Inelastic light scattering in superionic glasses silver iodide-silver borate ((AgI)x(Ag2O

Inelastic light scattering in superionic glasses silver iodide-silver borate ((AgI)x(Ag2O.nB2O3)1-x). Carini, G.; Cutroni, M.; Fontana, A.; Mariotto, G. 20667-12-3 and 7783-96-2 are also occured in this study.; Rocca, F. (Ist. Fis., Univ. Studi Messina, Messina, Italy). Phys. Rev. B: Condens. Matter, 29(6), 3567-72 (English) 1984. CODEN: PRBMDO. ISSN: 0163-1829. DOCUMENT TYPE: Journal CA Section: 73 (Optical, Electron, and Mass Spectroscopy and Other Related Properties) Section cross-reference(s): 57, 76 Raman spectra in superionic glasses (AgI)x(Ag2O.nB2O3)1-x are reported for various values of x (0.1 ￡ x ￡ 0.55) and for various n (2 ￡ n ￡ 4). For comparison, binary glasses Ag2O.nB2O3 were also studied. They provide light scattering exptl. evidence of the network-modifier nature of the Ag2O in borate matrix. The model of A. Martin and W. Brenig (1974) for the interpretation of the low-frequency Raman band in the glasses was applied to the samples with increasing content of AgI: a phenomenol. correlation length was obtained from the study of the low-frequency peak of the various glasses, by introducing the values of the transverse and longitudinal sound velocities, obtained by ultrasonic measurements. That kind of calcn. confirms the hypothesis of the increase on the correlation length from 8 ? at x = 0 to 12 ? at x = 0.55. .

Direct experimental determination of the crossover frequency between phonon and fracton regimes and its scaling behavior in superionic silver borate glasses

Direct experimental determination of the crossover frequency between phonon and fracton regimes and its scaling behavior in superionic silver borate glasses. Fontana, A.; Rocca, F.; Fontana, M. P. (Dip. Fis., Univ. Trento, Povo I-38050, Italy). Phys. Rev. Lett., 58(5), 503-6 (English) 1987. CODEN: PRLTAO. 7783-96-2 and 20667-12-3 are cas registry numbers of chemicals which are used as reagents here. ISSN: 0031-9007. DOCUMENT TYPE: Journal CA Section: 73 (Optical, Electron, and Mass Spectroscopy and Other Related Properties) The crossover frequency, wco, was detd. between phonon and fracton regimes from the study of the low-frequency inelastic light scattering in superionic borate glasses of the type (AgI)x(Ag2O.nB2O3)1-x. The scaling of wco with the fractal characteristic length was studied by variation of the AgI concn. x. The diffusion coeff. scaling exponent q and the spectral dimensionality d were obtained which characterizes energy diffusion on a fractal. .