Optical Study of Aniline Hydrobromide Single Crystal

Abstract

A domain structure previously concluded an X-ray study of aniline hydrobromide was directly confirmed optical means. The domain walls were found to move easily a shearing force. The temperature dependence of the extinction angle was obtained. The thermal transition of transparency was measured, and interpreted on the basis of the domain structure. The refractive indices were also measured. Although the double refraction was found to be fairly large, any anisotropy of optical absorption was not detected within the limit of experimental error.