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:

1972-11-01

Pagination or Media Count:

15.0

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