One of acknowledged methods remarkably improving structural, magnetic and electrical properties of spinel ferrite systems is the substitution of iron ions by some trivalent ions. In the family of spinel ferrites, thanks to its high saturation magnetization and electrical resistivity as well as low losses, the nickel-zinc ferrite is a very important magnetic material used in many applications in electrical engineering and electronics. The properties of these materials are in general dependent upon chemical composition, method of preparation, stoichiometry, sintering time, temperature as well as the atmosphere, etc. In this study the influence of appropriately selected ions (M = In3+, Nd3+, Dy3+ and Er3+), partly replacing Fe3+, on the microstructure and magnetic properties of spinel ferrite with the composition Ni0.42Zn0.58M0.02Fe1.98O4 fabricated by means of standard ceramic technology was investigated.
If the inline PDF is not rendering correctly, you can download the PDF file here.
 E. Ušák and M. Ušáková, “Influence of Ni/Zn Ratio Variation on Structural and Magnetic Properties of NiZn ferrites”, Journal of Electrical Engineering, 2012, vol. 63, No. 7s, pp. 141–143.
 B. B. V. S. Vara Prasad, “Effect of Indium Substitution on the Electrical and Magnetic Properties of Ni-Zn ferrite”, Journal of Theoretic and Applied Physic, 2015, vol. 9, no. 4, pp. 267–272.
 K. V. Kumar, D. Paramesh and P. V. Reddy, “Effect of Aluminum Doping on Structural and Magnetic Properties of Ni-Zn Ferrite Nanoparticles”, World Journal of Nano Science and Engineering, 2015, vol. 5, no. 3, pp. 68–77.
 M. Šoka, M. Ušáková, E. Ušák, R. Dosoudil and J. Lokaj, “Magnetic Properties Analysis of Rare-Earth Substituted Nickel Zinc Ferrites”, IEEE Transactions on Magnetics, 2014, vol. 50, no. 4, Art. No. 2800304.
 S. E. Shirsath, B. G. Toksha and K. M. Jadhav, “Structural and Magnetic Properties of In3+ substituted NiFe2O4”, Materials Chemistry and Physics, 2009, vol. 117, no. 1, pp. 163–168.
 N. Rezlescu, E. Rezlescu, C. Pasnicu and M. L. Craus, “Effects of the Rare-Earth Ions on some Properties of a Nickel-Zinc Ferrite”, Journal of Physics: Condensed Matter, 1994, vol. 6, no. 29, pp. 5707–5716.
 J. P. Sing, H. Kumar, A. Singha, N. Sarin, R.C. Srivastava and K. H. Chae, “Solubility Limit, Magnetic Interaction and Conduction Mechanism in Rare Earth Doped Spinel Ferrite”, Applied Science Letters, 2016, vol. 2, no. 1, pp. 3–11.
 M. Šoka, M. Ušáková, E. Ušák, R. Dosoudil and E. Dobročka, “Magnetic and Structural Properties of Nickel Zinc Ferrites Doped with Yttrium”, IEEE Transactions on Magnetics, 2015, vol. 51, no. 1, Art. no. 2000504.
 E. Ušák, M. Ušáková and M. Šoka, “Study of Magnetic Properties of Samarium Substituted Nickel-Zinc Ferrites”, Journal of Electrical Engineering, 2015, vol. 66, no. 7s, pp. 112–115.