Nickel-zinc spinel nanoferrites: Magnetic characterization and prospects of the use in self-controlled magnetic hyperthermia

Abstract Effect of zinc substitution on magnetic properties and AC heating characteristics of Ni 1− x Zn x Fe 2 O 4 ( x  = 0–1) nanoparticles has been studied. Magnetic parameters, such as saturation magnetization, Curie temperature, specific loss power, have been determined for the samples. It is shown that the samples with a higher zinc concentration ( x  > 0.5) display reduced values of spontaneous magnetization and Curie temperature as compared to those with x x  = 0.75. It is concluded that heavily Zn-substituted Ni 1− x Zn x Fe 2 O 4 nanoparticles are promising materials for self-controlled magnetic hyperthermia applications.