Rotation Boundaries in the Fan-Type Microcrystals of Zn and Cd

Abstract

Fan-type microcrystals of Zn and Cd that are new in form are found. They were grown under the condition of an Ar-gas pressure of 160 Torr and a supersaturation ratio of eight. The crystals of two types, one of which was a single crystal and the other was a contact twin with a (0001) plane as a rotation boundary.A new method was given to classify the rotation boundaries by the arrangement of atoms on a coincidence boundary. The findings about fan-type microcrystals by scanning electron microscope were also reported together with the twinning of the crystals. Finally, three new types of rotation boundaries were added to nine of those that had been classified according to the difference in Laue transmission patterns.