Results 221 to 230 of about 12,365 (263)

Lattice Thermal Conductivity of Solids

Physical Review B, 1971
Reformulation of the lattice thermal conductivity of solids has been given, using the fact that the three-phonon umklapp processes can be divided into different classes depending on the reciprocal-lattice vectors of the crystal concerned, and that they tend towards displaced distribution functions characteristic of their own.
Y. P. Joshi, G. S. Verma
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Theory of Thermal Conductivity of Solids at Low Temperatures

Reviews of Modern Physics, 1961
exaly   +2 more sources

Thermal conductivity of solid methane

Physical Review B, 1997
The thermal conductivity K of solid methane was measured within the temperature range of 1.2\char21{}25 K, using the steady-state method. The results obtained revealed an existence of the strong phonon scattering mechanisms connected with rotational excitation of the methane molecule.
A. Jez-dotowski, H. Misiorek, V. V. Sumarokov, B. Ya. Gorodilov   +3 more
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Thermal conductivity of solid deuterium

Soviet Journal of Low Temperature Physics, 1977
The thermal conductivity of solid deuterium is investigated in the interval from 1.9 to 13°K. It is found that the thermal conductivity of deuterium in the helium temperature range increases by almost two orders of magnitude when the concentration of the para-modification in the samples is decreased from 30 to 2.2%.
B. Ya. Gorodilov, I. N. Krupskii, V. G. Manzhelii   +2 more
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The thermal conductivity of solid helium

Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1952
Abstract The thermal conductivities of crystals of solid helium at densities between 0⋅194 and 0⋅218 g/cm3 have been measured at liquid-helium temperatures. In order to interpret the results, the specific heat of solid helium at these densities has been measured from 0⋅6 to 1⋅4° K.
F. J. Webb, K. R. Wilkinson, J. Wilks
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Thermal Conductivity. Part II.: Thermal Conductivity of Badly-conducting Solids

Proceedings of the Physical Society of London, 1914
The thermal conductivities of a selection of non-metals at 20°C. and 100°C. have been determined by precisely the same method, and in the main the same apparatus as was recently employed by the author in the determination of the "Thermal conductivity of some of the rarer metals and alloys." The substances treated were in the form of accurately turned ...
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Thermal conductivity of amorphous solids above the plateau

Physical Review B, 1987
We have measured the thermal conductivity of polymethylmethacrylate (PMMA), amorphous ${\mathrm{As}}_{2}$${\mathrm{S}}_{3}$, Ca-K nitrate glass, three ${\mathrm{SiO}}_{2}$-based glasses, and glycerol in the temperature range 30--300 K, using an ac technique that eliminates errors from blackbody radiation.
, Cahill, , Pohl
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Thermal Conductivities of a Cracked Solid

Journal of Composite Materials, 1983
Formulas are presented which describe the effect of flat elliptical cracks on the effec tive thermal conductivity of an otherwise homogeneous body. The cracks are assumed randomly and isotropically distributed throughout the body, and may either be dry or composed of any material with a conductivity differing from that of the matrix.
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The Thermal Conductivity of Solid Neon

1976
The thermal conductivity of solid neon samples at constant volume was measured from 0.5 K to 10 K. An isotopically purified 20Ne sample and a sample with the natural isotopic mixture were studied. Measurements were made at molar volumes of 13.4 cc/mole and 12.9 cc/mole.
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Specific Heat and Thermal Conductivity of Solid Fullerenes

Science, 1993
Evidence is presented that the lattice vibrations of compacted C 60 /C 70 fullerite microcrystals consist predominantly of localized modes. Vibrational motions of the rigid molecules ("buckyballs") have been identified as well as their internal vibrations.
J R, Olson, K A, Topp, R O, Pohl
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