The slip plane of crystalline mercury

Abstract
Crystalline mercury is reported to slip on the {100} planes of the face-centred rhombohedral structure, although it has been suggested that the experimental observations could equally well be interpreted as slip on {111} planes. A new single surface analysis is described in this paper which enables these two cases to be distinguished unambiguously, and experimental results are presented which show that the slip plane is {111}. An extension of the method enables an indication of the slip direction to be obtained and this is found to be which is not the most closely packed direction in mercury.

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