Phase Transformations in Cuprous Telluride

The phase transformations of cuprous telluride are examined by combination of DTA and electron diffraction methods. With increasing temperature phase transformations occur at 175, 275, 320, 365, and 575°C. Two phases, αI and αII, coexist at room temperature. Their structural features as well as those of the high temperature phases β, γ, δ, and ε are presented.