caa a22 4500 467923124 CHVBK 20180406152922.0 cr unu---uuuuu 170328e20060501xx s 000 0 eng 10.1134/S1087659606030072 doi (NATIONALLICENCE)springer-10.1134/S1087659606030072 Raman and dielectric spectra of the glass and single crystal of Li2Ge7O15 in the frequency range 3-1000 cm−1: I. Comparison of the structures of the crystal and initial glass [Elektronische Daten] [V. Sigaev, S. Lotarev, E. Smelyanskaya, P. Sarkisov, A. Volkov, G. Komandin, V. Koltashev, V. Plotinichenko] The Raman and dielectric spectra of vitreous and single-crystal lithium heptagermanates are measured over a wide range of frequencies from 3 to 1000 cm−1. It is revealed that the spectra of the Li2O · 7GeO2 glass and the Li2Ge7O15 crystal are similar to each other because the intense but broad bands in the spectrum of the glass correspond to the most intense groups of bands in the spectrum of the crystal. The similarity is observed over the entire frequency range, including the range of the boson peak. This indicates that the shortrange orders in the structures of the glass and the crystal are similar to each other and that the medium-range order in the glass resembles the main structural motif of the crystal. Pleiades Publishing, Inc., 2006 Sigaev V. Mendeleev University of Chemical Technology, Miusskaya pl. 9, 125130, Moscow, Russia aut Lotarev S. Mendeleev University of Chemical Technology, Miusskaya pl. 9, 125130, Moscow, Russia aut Smelyanskaya E. Mendeleev University of Chemical Technology, Miusskaya pl. 9, 125130, Moscow, Russia aut Sarkisov P. Mendeleev University of Chemical Technology, Miusskaya pl. 9, 125130, Moscow, Russia aut Volkov A. Institute of General Physics, Russian Academy of Sciences, Leninskii pr. 53, 119991, Moscow, Russia aut Komandin G. Institute of General Physics, Russian Academy of Sciences, Leninskii pr. 53, 119991, Moscow, Russia aut Koltashev V. Research Center of Fiber Optics, Institute of General Physics, Russian Academy of Sciences, ul. Vavilova 38, 119991, Moscow, Russia aut Plotinichenko V. Research Center of Fiber Optics, Institute of General Physics, Russian Academy of Sciences, ul. Vavilova 38, 119991, Moscow, Russia aut Glass Physics and Chemistry Nauka/Interperiodica 32/3(2006-05-01), 296-303 1087-6596 32:3<296 2006 32 10720 https://doi.org/10.1134/S1087659606030072 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1134/S1087659606030072 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Sigaev V. Mendeleev University of Chemical Technology, Miusskaya pl. 9, 125130, Moscow, Russia aut NATIONALLICENCE 700 1- Lotarev S. Mendeleev University of Chemical Technology, Miusskaya pl. 9, 125130, Moscow, Russia aut NATIONALLICENCE 700 1- Smelyanskaya E. Mendeleev University of Chemical Technology, Miusskaya pl. 9, 125130, Moscow, Russia aut NATIONALLICENCE 700 1- Sarkisov P. Mendeleev University of Chemical Technology, Miusskaya pl. 9, 125130, Moscow, Russia aut NATIONALLICENCE 700 1- Volkov A. Institute of General Physics, Russian Academy of Sciences, Leninskii pr. 53, 119991, Moscow, Russia aut NATIONALLICENCE 700 1- Komandin G. Institute of General Physics, Russian Academy of Sciences, Leninskii pr. 53, 119991, Moscow, Russia aut NATIONALLICENCE 700 1- Koltashev V. Research Center of Fiber Optics, Institute of General Physics, Russian Academy of Sciences, ul. Vavilova 38, 119991, Moscow, Russia aut NATIONALLICENCE 700 1- Plotinichenko V. Research Center of Fiber Optics, Institute of General Physics, Russian Academy of Sciences, ul. Vavilova 38, 119991, Moscow, Russia aut NATIONALLICENCE 773 0- Glass Physics and Chemistry Nauka/Interperiodica 32/3(2006-05-01), 296-303 1087-6596 32:3<296 2006 32 10720 Metadata rights reserved Springer special CC-BY-NC licence nationallicence SWISSBIB 467923124 BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer