V.K.Komar
Received October 12, 1998
Qualitative structure changes
occur in ZnSe crystals grown from the melt by Bridgman method under conditions
favoring formation of thermoelastic stresses in the crystal lattice. The
behavior of their optical, thermal, dielectric and other performances becomes
anomalous, so that phenomena are observed untypical for the cubic 3m structure
of the crystal lattice. The crystal properties changes occurring in the
course of growing has been studied using optical polarization, acousto-optical
and other methods and is shown to be related to a special stressed-strained
state of the crystal lattice resulting in a lowered crystal symmetry. This
assumption is confirmed by observed anomalous effects originating from
the anisotropy of physical properties of the cubic crystal.