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Abstract
A 22-layered new polytype of cadmium iodide, designated as 22Hc, with unit cell dimensions a = 4.24 Å, c = 75.18 Å has been discovered. The detailed structure of the polytype has been worked out. It is shown that this polytype is based on a 2H ideal structure. The polytype 22Hc is so far the largest of the cadmium iodide polytypes whose detailed structure is known. The growth of the polytype has been discussed in terms of screw-dislocation theory and the difficulties which arise in this are pointed out.
Published Online: 2010-07-28
Published in Print: 1962-12
