Magnetic and Magnetotransport Properties of Fe-NbO System

摘要

Magnetoresistive effect and electrotransport properties of Fe-NbO (13 ≤ Fe, at.% ≤ 80) thin films annealed at 600°C has been investigated. It has been established that the samples structure contains three main phases Fe, NbO_2, Fe_(2.9)O_4. Maximum of magnetoresistance in the samples does not exceed 0.3%, coercive force ranges from 150 to 370 Oe, depending on the Fe concentration. It is assumed that the films have a granular structure. Magnetoresistance and coercive force values, as well as the correlation between the magnetoresistance and the magnetization of the Fe-NbO samples are uncharacteristic for granular systems. It is assumed that uncharacteristic properties are due to the significant influence of ferrite Fe_(2.9)O_4 on the magnetic properties and electrotransport of the Fe-NbO films.