Abstract
AbstractMixed crystals of potassium‐ammonium zinc chloride in different concentrations were grown from aqueous solution employing the techniques of slow cooling and controlled evaporation. Powder x‐ray diffraction studies were carried out on the grown crystals. The comparison between lattice parameters a, b and c are experimentally determined and calculated by Vegad's law. The concentration of K+ ions in the crystals was measured by the atomic absorption technique. The crystal morphology changed considerably by increasing K+ concentration. The optical absorption coefficient (α) indicated strong influence changing concentration. The optical energy gap was found to decrease with increasing K+ concentration. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
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