Temperature Dependence of Debye-Waller Factors in bcc Metals. I

抄録

The modified form of the non central force model which considers the electron-ion interaction term of Kreb’s model to the Clark-Gazis-Wallis type angular forces is considered to calculate the Debye-Waller exponents at different temperatures for three bcc metals Sodium, α-iron and cromium and compared with the available X-ray measurements in terms of the temperature parameter Y of the Debye Waller factor, characteristic Debye temperature θ_M and the mean square displacement u⁻² of the atoms. The theoretical results are found to be in a reasonably satisfactory agreement with the experimental values.