The interferometric mirage effect method: The determination of the thermal diffusivity of CdMnTe
A Michelson interferometer was used as a precise detector in the Mirage effect configuration in order to determine the thermal diffusivity of the diluted magnetic semiconductor Cd1?xMnxTe, in the concentration range 0<x<0.6 at room temperature. This zinc-blende ternary alloy exhibits an almost linear behavior of the thermal diffusivity as a function of Mn concentration. This trend is similar to that of the energy gap against Mn concentration, which increases linearly as the nominal x value increases. The latter result was tested by electrolytic electroreflectance measurements.
mirage effect thermal diffusivity interferometric thermal instrument cdmnte semiconductor