Abstract
Optical phonons in mercury chalcogenides doped with selected transition metal ions (TMI) are investigated by infrared reflectivity and Raman scattering measurements performed at temperatures from 5 to 295 K. The results obtained for Hg 1− x Fe x Se, Hg 1− x Co x Se, Hg 1− x Fe x S and Hg 1− x Co x S mixed crystals confirm the chemical trends in the dependence of the local mode frequency on the number of 3d electrons of the TMI, reported previously for the wide-gap, zinc-blende II–VI semiconductors.
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