Peculiarities in the transport characteristics of phonons in glasses and glass-like crystals at helium temperatures

Journal Article · Sat Aug 15 00:00:00 EDT 2015 · Journal of Experimental and Theoretical Physics

DOI:https://doi.org/10.1134/S1063776115080130· OSTI ID:22472127

Salamatov, E. I. ^[1]; Taranov, A. V.

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1. Russian Academy of Sciences, Physicotechnical Institute, Ural Branch (Russian Federation)

Peculiarities in the transport characteristics of thermal-frequency phonons are analyzed in the region of transition to the thermal conductivity plateau in fused quartz, F-1 glass, glassed based on pentaphosphates of rare-earth metals, and a number of ferroelectrics (relaxors). It is shown that the formation of the plateau region in the temperature dependence of thermal conductivity at T < 10 K for these materials can be associated with the occurrence of a gap in the spectrum of phonon states.

• OSTI ID: 22472127
• Journal Information: Journal of Experimental and Theoretical Physics, Vol. 121, Issue 2; Other Information: Copyright (c) 2015 Pleiades Publishing, Inc.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7761
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CRYSTALS
FERROELECTRIC MATERIALS
GLASS
PHONONS
PHOSPHATES
QUARTZ
RARE EARTH COMPOUNDS
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE 0000-0013 K
THERMAL CONDUCTIVITY