ChemInform Abstract: ON THE HIGHER TELLURIDE OF GALLIUM GA2TE5

On the phase diagram of the Ga-Te system in the composition range 55 at % Te

“…Thus, Newman et al [2] proposed Ga3Te2 (54.96 wt % Te), the compound Ga2+=T% is proposed by Semiletov and Vlasov [12], with a cubic cell ofa = I0.32A, Lissauskas and Yasutis [13] working on thin films proposed the compound GasTe4 (70.93wt% Te), with a rhombohedral unit cell of a = 10.10A and a = 89~ ', Newman etal. [2] also reported the compound GaTes (84.59wt%T3), with an hexagonal cell ofa = 6.43A and c = 14.20A and finally Alapini et al [3] presented the compound Ga2Tes (82.06wt% Te) with an hexagonal cell of a = 7.913A and c = 6.848A. All these compounds, except the Ga3Tea proposed by Lisauskas and Yasutis [13], are outside the region of the compositions GaTe-Ga2Te3.…”

“…1): (a) Ga-Te (64.65 wt% Te), with two structural modifications, a monoclinic [3][4][5][6][7][8] and an hexagonal structure [4] and (b) Ga2Te3 (73.30wt % Te), with an fcc zinc blende structure [1][2][3][4]9,10]. An orthorhombic superstructure is also reported [11 ].…”

“…It is worth noting that, in all the phase diagrams [1][2][3], a common feature is the eutectic for GaTe-Ga2Te3 at the composition 56.5 at % Te.…”