ISSN:
1572-9567
Keywords:
heat capacity
;
high pressure
;
silver chloride (AgCl)
;
thermalconductivity
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract Using the transient hot-wire method, measurements were made for solid AgCl of both the thermal conductivity, λ, and the heat capacity per unit volume, ρc p, where ρ is the mass density. Measurements were made in the temperature range 100 to 400 K, and at pressures up to 2 GPa. c p(P, T) could be adequately described if the acoustic modes were represented by a Debye model and the optic modes by an Einstein model. Analysis of λ(T) showed that only the acoustic modes needed to be taken into account up to 300 K, but that the optic modes were increasingly effective in carrying heat at higher temperatures. λ(P) was adequately described by the Lawson formula, but not by the Leibfried-Schlömann formula, to which it is formally equivalent. Agreement with experiment could be achieved by two different modifications of the Leibfried-Schlömann formula, although neither has a firm theoretical basis.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00504190
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