skip to main content

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

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.
Authors:
 [1] ; ;  [2]
  1. Russian Academy of Sciences, Physicotechnical Institute, Ural Branch (Russian Federation)
  2. Russian Academy of Sciences, Kotel’nikov Institute of Radio Electronics (Russian Federation)
Publication Date:
OSTI Identifier:
22472127
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Experimental and Theoretical Physics; Journal Volume: 121; Journal Issue: 2; Other Information: Copyright (c) 2015 Pleiades Publishing, Inc.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
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