Abstract
Thermal doping of AgAsSeand GeSbSe chalcogenide glasses (ChG) with iron results in a considerable increase of conductivity (by 4–7 orders of magnitude at dopant concentration of 0.4–2.0 at.%) and in the transition from p- to n-type conductivity. Iron-doped glasses were studied using ESR and Mossbauer spectroscopy. The features of iron local environment are discussed, ESR and Mossbauer spectroscopy data are compared, and small polaron model of charge transport in transition metal doped vitreous alloys is suggested.
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