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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:Far-infrared and magnetic properties of Ni doped PbTe (Z(Ni) = 1 x 10(19) at./cm(3)) single crystal are investigated in a broad range of temperature and magnetic fields. Far-infrared reflection spectra were analyzed using a fitting procedure based on the modified plasmon-two phonon interaction model. Together with the strong plasmon-two longitudinal optical phonon coupling we obtained a local mode of Ni at. about 180 cm(-1). This mode intensity depends on temperature. Magnetic measurements shows that PbTe alloys doped with Ni reveals weak ferromagnetic interaction between magnetic ions.