Inhomogeneous lattice distortions in the Zn0.99Cd0.01Se crystal

Abstract

The structural state of a Zn 0.99 Cd 0.01 Se crystal at temperatures of 78 and 300 K has been investi gated using thermal neutron diffraction. It has been found that the diffraction patterns of the crystal contain diffuse scattering regions in the vicinity of the basic structure reflections, which are independent of temper ature. It has been shown that the effects of diffuse scattering are caused by transverse displacements of lattice atoms, which are induced by impurities of the Cd 2+ ions whose sizes substantially exceed the sizes of the Zn 2+ ions. The obtained results have been used to construct a picture of the influence of cadmium ions on the struc tural state of the crystal under study.