Abstract
CdTe1-xSex anion mixed crystals have been grown from non-stoichiometric melts and by means of a modified vertical travelling-heater method. Selenium has been found to have an essentially higher affinity for cadmium than tellurium. The cubic phase (zincblende structure) exists in the composition range 0≤xCdSe≤0.45, the hexagonal phase (wurtzite structure) in the range 0.65≤xCdSe≤1. In order to compare the lattice parameters of the cubic and hexagonal modifications, the mean distances between next-neighbouring anions and cations, da-c, were calculated from the lattice parameters. The relation between da-c values and composition x roughly obeys Vegard's rule. By means of Vickers indentation microhardness measurements, the solid-solution hardening (SSH) behaviour was investigated for the first time and has been compared with the SSH of II–VI cation solid solutions. Regarding the hexagonal CdTe1-xSex modifications, one has to pay attention to the large anisotropy of microhardness depending on the surface orientation. © 1998 Kluwer Academic Publishers
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Schenk, M., Silber, C. Lattice parameter and microhardness investigations on CdTe1-xSex. Journal of Materials Science: Materials in Electronics 9, 295–300 (1998). https://doi.org/10.1023/A:1008880823853
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DOI: https://doi.org/10.1023/A:1008880823853