PMID: 11909481Mar 23, 2002Paper

Cation mass dependence of the nearly constant dielectric loss in alkali triborate glasses

Physical Review Letters
A RiveraL J Buckley

Abstract

Electrical ac conductivity measurements on alkali triborate glasses ( M2O x 3B2O3, M = Li, Na, K, and Rb) were performed at temperatures down to 8 K and frequencies up to 1 GHz. All samples show a nearly constant dielectric loss (NCL), at the limit of high frequencies and/or low temperatures. The magnitude of the NCL is found to decrease as m(-1/3) with increasing alkali ion mass m. This quantitative result for the NCL, closely related to the mean-square displacement of ions, indicates that the origin of the NCL might be related to vibrational relaxation of the ions in the anharmonic potentials that cage them, and the cage is decaying very slowly with time.

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Citations

Jul 8, 2008·The Journal of Chemical Physics·A LinaresT A Ezquerra
Apr 26, 2005·The Journal of Chemical Physics·C M Roland, R Casalini
Jun 20, 2014·Physical Chemistry Chemical Physics : PCCP·Wilmer BucheliRicardo Jimenez
Mar 31, 2009·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Javier Garcia-BarriocanalJacobo Santamaria
Jan 30, 2009·Physical Chemistry Chemical Physics : PCCP·J R SangoroF Kremer
Apr 16, 2014·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·A A KhamzinR R Nigmatullin
Jul 13, 2021·ACS Applied Materials & Interfaces·Angelo D MarshallJudy Z Wu
Oct 21, 2021·Journal of Physics. Condensed Matter : an Institute of Physics Journal·A A Khamzin, A S Nikitin

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