Abstract
The thermal conductivity of 17 alkali halides has been calculated with a variational method. The calculations confirm previous results from relaxation-time calculations on NaCl and KCl that optic phonons are important in both the heat current and the scattering processes. It is found that the relative contributions to the scattering integral from different combinations of branches are strongly correlated to the mass ratio of the two constituent ions. On the other hand the amount of heat carried by optic phonons is more dependent on the ratio of the static and optic dielectric constants, epsilon 0/ epsilon infinity , than on the mass ratio. The theory of mirror pairs has been applied in an analysis of the thermal conductivity data. It is shown that experiments on Li and LiBr would be a critical test of the variational calculations.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
