The Thermal Conductivities of SrCl2 and SrF2 from 85 to 400 K
Measurements of thermal conductivity, λ, for the alkaline earth compounds SrCl2 and SrF2 indicate that the λ of SrC12 is less than that of SrF2 by a factor of 4 to 5 over the temperature range from 85 to 400 K. This difference can be related to the differences in other parameters of the two compounds. At the lower end of the temperature range, the thermal resistivities, λ−1, of both materials are linear; but large positive deviations occur at the higher end of the range. Calculated values using an equation for acoustic phonon conduction agree with the experimental values to within 30% over the entire measurement range. The positive deviations from linearity appear to be due to the effect of lattice dilation on the Debye temperatures and Grüneisen constants.
KeywordsThermal Resistivity Debye Temperature Strontium Chloride Lattice Dilation Large Positive Deviation
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- 1.L. S. Parfenreva, I. A. Smirnov, and V, V. Tikhonov, Soviet Phys. Sol. State 13 (5), 1267–1268 (1971).Google Scholar
- 2.B. M. Mogilevskii and V. F. Tumpurova, Fiz. Tverd. Tela. 17, 1786–69 (1974).Google Scholar
- 4.A. S. Dworkin and M. A. Bredig, J. Phys. Chem. 8 416–17 (1963).Google Scholar
- 8.J. P. Moore, R. K. Williams and R. S. Graves, ORNL/TM-4797, Oak Ridge National Laboratory, Oak Ridge, TN., April 1975.Google Scholar
- 9.A. Eucken, Forsch. Gebiete Ingenieur. B3, Forschungshaft 353 (1932); Ceram. Abs. 11(11), 576 (1932); Ceram. Abs. 12 (6), 231 (1933).Google Scholar
- 10.F. R. Charvat and W. D. Kingery, J. Am. Ceram. Soc. 40, 305–15 (1954).Google Scholar
- 11.T. L. Inyushkina, I. N. Narenkova and L. N. Dzyubo, The Russian Journal of Physics and Chemistry 49 2458–2459 (1975).Google Scholar
- 14.R. G. Klemens and D. J. Ecsedy, “Thermal Resistance of Dielectric Crystals at High Temperatures” in Phonon Scattering in Solids, L. C. Challis, V. W. Rampton and A. F. G. Wyatt, eds., Plenum Press, New York (1976).Google Scholar
- 16.Private communication from W. A. Simpson, Metals and Ceramics Division, Oak Ridge National Laboratory, P. O. Box X, Oak Ridge, TN.Google Scholar
- 17.J. Ziman, p. 57 in Electrons and Phonons, Oxford University Press (1963).Google Scholar
- 18.D. F. Smith, T. E. Gardner, B. B. Letson, and A. R. Taylor, Jr., “Thermodynamic Properties of Strontium Chloride and Strontium Fluoride from 0° to 300°K,” Rep. Investig. 6316, Bureau of Mines, U. S. Department of Interior, (1963).Google Scholar