Accession Number : AD0752471

Title :   Anomalous Specific Heat of Disordered Solids.

Descriptive Note : Memorandum rept.,

Corporate Author : NAVAL RESEARCH LAB WASHINGTON D C

Personal Author(s) : Rosenstock,Herbert B.

Report Date : NOV 1972

Pagination or Media Count : 15

Abstract : Some years ago, a model was proposed to account for the observed 'excessive' specific heat that glasses exhibit at low temperatures. Individual atoms trapped in a cavity and weakly bound to only one atom contribute to the specific heat, but not to the elastic properties, thus leading to a deviation from the normal relation between mechanical and thermodynamic properties. For quantitative calculations, the limiting model of a free particle in a cavity is used. Effects on the thermal conductivity, and relationship to other proposed theories, are discussed briefly. (Author)

Descriptors :   (*GLASS, *SPECIFIC HEAT), LOW TEMPERATURE, THERMAL CONDUCTIVITY, THEORY, VIBRATION, CRYSTAL LATTICES, MATHEMATICAL MODELS

Subject Categories : Solid State Physics
      Thermodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE