Abstract

It was shown that for the V-doped Cd_1−xHg_xTe (x=0.014 and x=0.037) crystals the anisotropic V²⁺ and V³⁺ centres had the trigonal, rhombohedral and tetragonal symmetry. The appearance of the trigonal centres may be caused by formation the complex impurity (V²⁺(V³⁺)_cd + X_Te) centres, were X are the residual atoms of VII group atoms. The rhombohedral and tetragonal centres my be caused by the formation of the complex impurity (V²⁺(V³⁺)_Cd + Z_Cd) centres (Z may be the Hg atoms), whose axes are oriented in the <110>- and <001>-directions, respectively. Photoinduced anisotropic centres and intrinsic defects were also observed and their nature and photoionization energy were determined.

© 2001 Optical Society of America