Light scattering spectra of fast relaxation in silica and Ca0.4K0.6(NO3)1.4 glasses

J. Wiedersich; N. V. Surovtsev; V. N. Novikov; E. Rössler; A. P. Sokolov

doi:10.1103/PhysRevB.64.064207

Light scattering spectra of fast relaxation in silica and Ca_0.4K_0.6(NO₃)_1.4 glasses

J. Wiedersich
, N. V. Surovtsev
, V. N. Novikov
, E. Rössler
, A. P. Sokolov

Research output: Contribution to journal › Article › peer-review

44 Scopus citations

Abstract

Light-scattering spectra of two glasses, Ca_0.4K_0.6(NO₃)_1.4 and silica are measured in the frequency range 1-10000 GHz, covering temperatures from 19 K to 310 K. The low-frequency wing of the fast-relaxation spectrum is found to show a power-law behavior with an exponent α proportional to temperature at values a<0.7. The data are qualitatively and quantitatively compared to different models on relaxations in glasses. It is shown that a model of thermally activated transitions in double-well potentials well describes the fast-relaxation spectra in both materials.

Original language	English
Article number	064207
Pages (from-to)	642071-6420715
Number of pages	5778645
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	64
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevB.64.064207
State	Published - Aug 1 2001
Externally published	Yes

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title = "Light scattering spectra of fast relaxation in silica and Ca0.4K0.6(NO3)1.4 glasses",

abstract = "Light-scattering spectra of two glasses, Ca0.4K0.6(NO3)1.4 and silica are measured in the frequency range 1-10000 GHz, covering temperatures from 19 K to 310 K. The low-frequency wing of the fast-relaxation spectrum is found to show a power-law behavior with an exponent α proportional to temperature at values a<0.7. The data are qualitatively and quantitatively compared to different models on relaxations in glasses. It is shown that a model of thermally activated transitions in double-well potentials well describes the fast-relaxation spectra in both materials.",

author = "J. Wiedersich and Surovtsev, \{N. V.\} and Novikov, \{V. N.\} and E. R{\"o}ssler and Sokolov, \{A. P.\}",

year = "2001",

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doi = "10.1103/PhysRevB.64.064207",

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AU - Wiedersich, J.

AU - Surovtsev, N. V.

AU - Novikov, V. N.

AU - Rössler, E.

AU - Sokolov, A. P.

PY - 2001/8/1

Y1 - 2001/8/1

N2 - Light-scattering spectra of two glasses, Ca0.4K0.6(NO3)1.4 and silica are measured in the frequency range 1-10000 GHz, covering temperatures from 19 K to 310 K. The low-frequency wing of the fast-relaxation spectrum is found to show a power-law behavior with an exponent α proportional to temperature at values a<0.7. The data are qualitatively and quantitatively compared to different models on relaxations in glasses. It is shown that a model of thermally activated transitions in double-well potentials well describes the fast-relaxation spectra in both materials.

AB - Light-scattering spectra of two glasses, Ca0.4K0.6(NO3)1.4 and silica are measured in the frequency range 1-10000 GHz, covering temperatures from 19 K to 310 K. The low-frequency wing of the fast-relaxation spectrum is found to show a power-law behavior with an exponent α proportional to temperature at values a<0.7. The data are qualitatively and quantitatively compared to different models on relaxations in glasses. It is shown that a model of thermally activated transitions in double-well potentials well describes the fast-relaxation spectra in both materials.

UR - https://www.scopus.com/pages/publications/0035421957

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JF - Physical Review B - Condensed Matter and Materials Physics

IS - 6

M1 - 064207

ER -

Light scattering spectra of fast relaxation in silica and Ca_0.4K_0.6(NO₃)_1.4 glasses

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