Abstract
A simple preparation method of metallic single crystal plates for X-ray examinations was developed, and thin and flat single crystal plates of cadmium, zinc and tin of low dislocation density were prepared. The as-grown metallic plates contained a few subgrain boundaries, and the dislocation density varied from less than 107 m/m3 in the most perfect region to 109 m/m3 in a less perfect region. Subsequent heat treatment decreased the dislocation density to less than 106 m/m3. By using these crystal plates, evolution of dislocations due to oxidation, expansion and contraction of dislocation loops and dislocation motions in the initial stage of plastic deformation were investigated by means of X-ray transmission topography. In addition, zinc plates containing a few dislocations were used for determining the atomic scattering factors by the Pendellösung-beat method. The present crystal plates were confirmed to be used effectively for solid state researches.
