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Magnetic susceptibility of Cd_{1-x}Fe_{x}Te_{1-y}Se_{y} was found to consist of Van Vleck term (characteristic for the Fe^{2+} centers in tetrahedral crystal symmetry) and temperature-dependent contribution. The occurrence of the latter indicates an existence of additional magnetic moments. We ascribe their origin to the modification of the Fe^{2+} energy level spectrum induced by mixed Te-Se anion...
Low-field magnetic susceptibility χ of Fe-doped II-VI compounds has been studied for wide iron concentration range (3 x 10^{18} ≤ N_{Fe} ≤ 10^{21} cm^{-3}). For the low iron content the Van Vleck-type paramagnetism is observed at low temperatures in all investigated materials (except for Hg_{1-x}Fe_{x}Se), which entirely confirms the theoretical prediction. For the higher Fe contents the experimental...
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