(a) Estimate for 300K the root mean square thermal dilation AV/V for a primitive cell of sodium ...

2. Rms thermal dilation of crystal cell. (a) Estimate for 300 K the root mean square thermal dilation AV/V for a primitive cell of sodium. Take the bulk modulus as 7 X 100 crg cm. Note that the Debye temperature 158 K is less than 300 K, SO that the thermal cnergy is of the order of k 1. (b) Use this result to estimate the root mean square thermal fluctuation Aala of the lattice parameter
Chapter 5 Phonon ll
introduction to solid state physics by kittel