Investigation of the pressure-induced B3-B1 phase transition in Cd1−xMnxTe (0≤x≤0.70)

Abstract

Energy-dispersive x-ray diffraction and electrical resistivity measurements have been used to investigate the effect of Cd replacement by Mn in the alloy series ${\mathrm{Cd}}_{1\mathrm{-}\mathrm{x}}$ ${\mathrm{Mn}}_{\mathrm{x}}$Te (0≤x,≤0.70). Both types of measurements indicate a linear decrease in the B3-to-B1 structural phase-transition pressure, $P_t$, with increasing Mn concentration, x; this dependence is expressed by the relationship $P_t$ =(3.29-1.32x) in gigapascals. These results are consistent with the expectation that the addition of Mn to CdTe tends to weaken the tetrahedral bond and thereby to destabilize the B3 structure.