DEBYE-WALLER FACTORS AND DEBYE TEMPERATURES OF RUBIDIUM HALIDES

The Debye-Waller factors of the rubidium halides obtained from differe nt theoretical models are critically compared with recent experimental data. The results from the model adopted by Govindarajan [Acta Cryst. (1973), A29, 576-577] seem to be in better agreement with experimenta l values than those from other models. The Debye temperatures calculat ed from the Debye-Waller factors are compared with those from specific heats. A modification recently suggested by Homing & Staudenmann [Act a Cryst. (1988), A44, 136-142] for the evaluation of the Debye tempera ture from Debye-Waller factors does not improve the agreement between the two sets.