ISBN:  Unavailable

Category: Unavailable

Page count: 117

The preparation and purification of elemental cadmium by zone refining are described. A comparison of the emission and mass spectrographic results on the zoning of a doped cadmium test bar is presented. The syntheses of high purity cadmium sulfide, cadmium selenide, zinc sulfide, and zinc selenide by the direct reaction of their gaseous elemental constituents are discussed. Emission and mass spectrographic data on synthesized cadmium sulfide are compared. The syntheses of zinc telluride, mercuric sulfide, mercuric selenide, and mercuric telluride by the combination of the elements in the liquid phase are outlined. A method for preparing barium telluride by the reduction of barium tellurate is given. Special handling techniques and x-ray characterization of this material are presented. Crystal growth of cadmium sulfide, zinc sulfide, cadmium selenide, zinc selenide, and mixed crystals of zinc sulfide-zinc selenide from the melt in a high pressure furnace is discussed. Doping of melt grown crystals is described. A discussion of the crystal growth of cadmium sulfide, zinc sulfide, and cadmium oxide by vapor phase techniques is presented. (Author).