Manifestation of Donor Hybridized Electron States in Magnetism of Nickel Impurities in Mercury Selenide Crystals

摘要

The temperature dependences of the magnetic susceptibility of crystal diluted magnetic semiconductor HgSe:Ni with the concentration of nickel impurities from 1·10~(18) to 1·10~(19) cm~(-3) were investigated. It was found that paramagnetic part of the susceptibility, which is wholly due to the effect of the Ni impurities, in the temperature range from 1.8 to 200 K is described by the Curie-Weiss law. The analysis of the concentration dependence of the Curie constant based on the model of the hybridized electronic states was carried out. The application of this model allowed us to determine the impurity parameters of crystals (the effective spin of the hybridized electronic states at the nickel impurity and the concentration of donor electrons).