论文信息 - Deformation‐Dipole Calculation of the Coefficient of Thermal Expansion for KBr

Deformation‐Dipole Calculation of the Coefficient of Thermal Expansion for KBr

The deformation‐dipole model for alkali halides is extended to include anharmonic effects. The linear coefficient of thermal expansion of KBr is calculated without adjustable parameters. Anharmonicities in the nearest‐neighbor overlap forces, in the long‐range Coulomb forces, and in the deformability of the ions are included in the model. Good agreement with experiment is obtained.

R. Hardy | A. Karo

[1] T. Barron,et al. Pressure dependence of the optical properties of alkali halide crystals , 1969 .

[2] R. Lowndes,et al. Dielectric dispersion and the structures of ionic lattices , 1969, Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences.

[3] J. Hardy,et al. Lattice Dynamics and Specific‐Heat Data of CsCl, CsBr, and CsI , 1968 .

[4] B. Jones. The dielectric constant of ionic solids and its change with hydrostatic pressure , 1967 .

[5] P. Meincke,et al. The thermal expansion of alkali halides , 1965 .

[6] R. Cowley. THE LATTICE DYNAMICS OF AN ANHARMONIC CRYSTAL , 1963 .

[7] J. Hardy. Lattice dynamics of alkali halide crystals in relation to specific heat data , 1962 .

[8] A. H. Kahn,et al. Electronic Polarizabilities of Ions in Crystals , 1953 .

[9] E. Kellermann. Theory of the vibrations of the sodium chloride lattice , 1940, Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences.

[10] C. Tomizuka,et al. Physics of solids at high pressures , 1965 .

[11] M. Born,et al. Dynamical Theory of Crystal Lattices , 1954 .