LATTICE PARAMETERS OF THE Hg1-XFeXSe AND Cd1-XFeXTe SEMIMAGNETIC SEMICONDUCTORS

الملخص

The results of lattice parameter measurements on the ternary semiconductor alloys Hg_1-xFe_xSe over the range (0≤x≤0.15) and Cd_1-xFe_xTe in the range (0≤x≤0.01), grown using modified Bridgman method, are reported. The polycrystalline samples of Hg_1-xFe_xSe and Cd_1-xFe_xTe with different nominal compositions were studied by X-ray diffraction method. The crystal structure of these compounds was determined as a cubic one of the zincblede type. The structural homogeneity of the samples was ascertained. We find that the lattice constants decreases linearly with iron concentration x according to Vegard's law in the case of Hg_1-xFe_xSe while this law could not be applied in the case of Cd_1-xFe_xTe. The limit of solubility of iron in HgSe and CdTe was not observed in the range of the investigated compositions.