Abstract
Concentration dependence of the specific magnetic moment of Co-and Fe-doped titanium oxide semiconductors has been studied at room temperature. A sharp increase in the magnetic moment has been found at low concentrations of a magnetic impurity. A giant value of 22.9 μB per impurity atom has been detected in TiO2 with a Co concentration of 0.15 at %, which has never been observed in oxide systems. The giant magnetic moments observed at low impurity concentration are attributed to the polarization of a crystal lattice. Comparison with the literature data indicates that the concentration dependences of magnetization are different in different oxide matrices.
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Original Russian Text © A.F. Orlov, N.S. Perov, L.A. Balagurov, A.S. Konstantinova, D.G. Yarkin, 2007, published in Pis’ma v Zhurnal Éksperimental’noĭ i Teoreticheskoĭ Fiziki, 2007, Vol. 86, No. 5, pp. 405–407.
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Orlov, A.F., Perov, N.S., Balagurov, L.A. et al. Giant magnetic moments in ferromagnetic oxide semiconductors. Jetp Lett. 86, 352–354 (2007). https://doi.org/10.1134/S002136400717016X
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DOI: https://doi.org/10.1134/S002136400717016X