Influence of Isomorphic Atom Substitution on Lattice Anisotropy of Thallium Dichalcogenide Layered Mixed Crystals

N.M. Gasanly Department of Physics, Middle East Technical University, 06531 Ankara, Turkey

Full Text PDF

Received: 23 12 2005; Revised version: 13 7 2006;

Compositional variation of the lattice parameters of TlBX2-type (B = Ga or In and X = S or Se) mixed crystals with monoclinic structure were studied by X-ray diffraction technique. The lattice anisotropy (c/b) of these mixed crystals changes linearly with substitution of the atoms located both at the centers and the vertices of the corresponding BX4 tetrahedra. A brief survey of the important features of the effect of isomorphic atom substitution on the lattice anisotropy and the unit cell volume of TlBX2-type mixed crystals with layered structure was presented.

DOI: 10.12693/APhysPolA.110.471 PACS numbers: 61.10.Nz, 61.66.Dk, 61.50.Ks