Ultrasonic propagation in a fluorozirconate glass from 0.08 K to 250 K
Open Access
- 1 January 1981
- journal article
- Published by EDP Sciences in Journal de Physique Lettres
- Vol. 42 (12), 267-270
- https://doi.org/10.1051/jphyslet:019810042012026700
Abstract
The attenuation and phase velocity variation of longitudinal and transverse ultrasonic waves have been measured in the fluorozirconate glass 57.5 % ZrF 4, 33.75 % BaF2 and 8.75 % ThF4, in the temperature range 0.08 to 250 K. The usual behaviour of amorphous insulators has been observed at the lowest temperatures indicating the existence of two-level tunnelling systems (TLS). From these acoustic measurements not only the coupling constants between TLS and longitudinal and transverse acoustic waves, but also the TLS density of states have been determinedKeywords
This publication has 9 references indexed in Scilit:
- Amorphous-like acoustical properties of Na doped β-Al2O 3Journal de Physique, 1980
- Saturation of the 9.4-GHz Hypersonic Attenuation in Fast-Neutron-Irradiated Crystalline QuartzPhysical Review Letters, 1979
- Elastic properties of sodium phosphate glasses at hypersonic frequencies by brillouin scatteringJournal of Non-Crystalline Solids, 1979
- Thermal properties of smoky quartz at very low temperaturesJournal of Physics and Chemistry of Solids, 1979
- Phonon Echoes in GlassPhysical Review Letters, 1976
- Ultrasonic investigation of amorphousfrom 1.5 to 480 KPhysical Review B, 1975
- On the ultrasonic attenuation in glasses at low temperaturesThe European Physical Journal A, 1972
- Tunneling states in amorphous solidsJournal of Low Temperature Physics, 1972
- Anomalous low-temperature thermal properties of glasses and spin glassesPhilosophical Magazine, 1972