X‐ray diffraction study of anharmonic thermal vibrations in β‐AgI

Intensity data were collected at room temperature from an extended‐face crystal of AgI using Mo Kα radiation. Least‐squares refinement indicates that the thermal motion of the Ag + ions is large with a considerable anharmonic component. The wurtzite positional parameter, u , was found to be 0.3748(2). The proportion of point defects was determined to be no greater than 0.9%. The proportion of random staking faults was determined by two experimental techniques to be no greater than 2%.