Magnetic, Electrical and Magnetotransport Properties of Mg(Fe0.8Ga0.2)2O4 δ Obtained by Pyrohtdrolitic Method


The magnetic, electrical and magnetotransport properties of spinel-type Mg(Fe0.8Ga0.2)2O4 δ ceramic ferrites have been investigated. The results of the investigations temperature and field dependences of magnetization and resistivity are presented and analyzed. The data of neutron scattering were found to be in good agreement with the Neel model of ferrimagnetism. This compound is magnetomonophase ferrimagnetic in the wide range of temperatures, and shows transition in paramagnet at high temperature (~490 K). Mg(Fe0.8Ga0.2)2O4 δ is characterized by maximal value of magnetization (28 emu/g) in the range of Mg(Fe1-xGax)2O4 δ solid solutions. A negative magnetoresistance (MR) effect has been observed in Mg(Fe0.8Ga0.2)2O4 δ ferrite spinel. It has been determined that coefficient of the negative MR increased from 0.23% (at room temperature) to 7.28% (at 220 K). It can be explained with the help of the spin-dependent scattering on magnetic inhomogeneity of granular boundary.

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Trukhanov, A. , Trukhanov, S. , Smirnov, O. , Kulikov, A. and Szymczak, H. (2015) Magnetic, Electrical and Magnetotransport Properties of Mg(Fe0.8Ga0.2)2O4 δ Obtained by Pyrohtdrolitic Method. Open Access Library Journal, 2, 1-7. doi: 10.4236/oalib.1100842.

Conflicts of Interest

The authors declare no conflicts of interest.


[1] Nagaev, E.L. (1988) Photoinduced Magnetism and Conduction Electrons in Magnetic Semiconductors. Physica Status Solidi B, 145, 11-64.
[2] Ohno, H., Shen, A., Matsukura, F., Oiwa, A., Endo, A., Katsumoto, S. and Iye, Y. (1996) (Ga,Mn)As: A New Diluted Magnetic Semiconductor Based on GaAs. Applied Physics Letters, 69, 363-365.
[3] Dietl, T., Ohno, H., Matsukura, F., Cibert, J. and Ferrand, D. (2000) Zener Model Description of Ferromagnetism in Zinc-Blende Magnetic Semiconductors. Science, 287, 1019-1022.
[4] Villain, J. (1979) Insulating Spin Glasses. Journal of Physics B, 33, 31-42.
[5] Poole, C.P. and Farach, H.A. (1982) Monte Carlo Study of the Local-Field Distribution in the Diluted Mantiferromagnetic Ising Model on the Triangular Lattice. Physica B, 47, 55-59.
[6] Coey, J.M.D. (1978) Amorphous Magnetic Order. Journal of Applied Physics, 49, 1646-1655.
[7] Antoshina, L.G. (2001) The Behaviour of the Magnetostriction and Magnetoresistance of the Ferrite CuGa0.4Al0.8Fe0.8O4 with Frustrated Magnetic Structure. Journal of Physics: Condensed Matter, 13, 127-133.
[8] Akther Hossain, A.K.M., Tabata, H. and Kawai, T. (2008) Magnetoresistive Properties of Zn1−xCoxFe2O4 Ferrites. Journal of Magnetism and Magnetic Materials, 320, 1157-1162.
[9] Nipan, G.D., Ketsko, V.A., Stognij, A.I., Trukhanov, A.V., Kol’tsova, T.N., Kop’eva, M.A., Elesina, L.V. and Kuznetsov, T.N. (2010) Inorganic Materials, Properties Solid of Mg(Fe1−XGaX)2O4+δ Solutions in Stable and Metastable State. Inorganic Materials, 46, 429-433.
[10] Nipan, G.D., Ketsko, V.A., Stognij, A.I., Trukhanov, A.V., Kol’tsova, T.N., Beresnev, E.N., Kop’eva, M.A., Elesina, L.V. and Kuznetsov, T.N. (2010) DMS-Solutions Mg(Fe1−XGaX)2O4+δ. Doklady Physical Chemistry, 430, 39-42.
[11] Ketsko, V.A., Beresnev, E.N., Kop’eva, M.A., Rjabkova, L.V., Baranchicov, A.E., Stognij, A.I., Trukhanov, A.V. and Kuznetsov, N.T. (2010) Specifics of the Pyrohydrolytic and Solid-Phase Syntheses of Solid Solutions in the (MgGa2O4)x (MgFe2O4)1−x System. Russian Journal of Inorganic Chemistry, 55, 427-429.
[12] Golosovskii, I.V., Kharchenkov, V.P., Bulkin, A.P., et al. (1988) Preprint LIYaF, No. 2, 1374.
[13] Corliss, L.M. and Hastings, J.M. (1953) A Neutron Diffraction Study of Magnesium Ferrite. Physical Review, 90, 1013-1018.
[14] Rodrigues-Carvajal, J. (2007) Program FULLPROF, Version 4.00. LLB CEA/Saclay, France.

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