Magnetic properties of Sn-substituted NiZn ferrite thin films

Effects of SnO2, WO3, and ZrO2 addition on the magnetic and mechanical properties of NiCuZn ferrites

“…On the other hand, the Ni 0.5 Cu 0.3 Zn 0.2 Fe 2 O 4 ceramics with SnO 2 and ZrO 2 added displayed no second phase, even with the amount reaching 5.0 wt%. As reported in the literature, tungsten and tin ions show a strong preference for the tetrahedral site (A site) and the octahedral site (B-site), respectively [23,25], while nonmagnetic zirconium ions first enter the tetrahedral site at a low concentration and then are divided between the tetrahedral and octahedral sites at a high concentration [24]. This study further found that the change in the lattice constant of the Ni 0.…”

“…For the Ni 0.5 Cu 0.3 Zn 0.2 Fe 2 O 4 ceramic with the addition of 1.5 and 5 wt% SnO 2 , the initial permeability fell to 322.5 and 112.3, and the quality factor dropped to 68.7 and 25.7, respectively. Tetravalent Sn 4 þ ions have a strong octahedral-site preference, and the saturation magnetization decreased with the increasing Sn 4 þ substitution due to the weaker A-O-B super-exchange interaction, bigger internal stress and smaller average grain size [25]. Unlike the ceramic with added WO 3 literature [31,32], but the latter revealed a microstructure marked with an exaggerated grain growth.…”

“…In spite of the addition of ZrO 2 , SnO 2 and WO 3 to NiZn ferrites [23][24][25], they have not been used to tailor the magnetic properties of NiCuZn ferrites, especially high-Cu 2 þ -content NiCuZn ferrites, whose densification, microstructure and magnetic properties have been observed to undergo significant changes due to the presence of CuO at the grain boundaries [2,3]. In this study, the effects of SnO 2 , WO 3 and ZrO 2 addition on the magnetic and mechanical properties of Ni 0.5 Cu 0.3 Zn 0.2 Fe 2 O 4 ceramics have been investigated.…”

The role of copper ions on the structural and magnetic characteristics of MgZn ferrite nanoparticles and thin films

“…The magnetic and electrical properties of soft ferrite could be easily tuned by incorporation and suitable distribution of additional cations (divalent or trivalent) in the spinel structure. Nanocrystalline ferrite thin films have potential applications in high-density magneto-optic recording devices, color imaging, bioprocessing, ferrofluids, magnetic refrigeration and monolithic microwave integrated circuits (MMICs) [1][2][3][4][5][6][7].…”

Microstructure and magnetic properties of Sn-substituted MnZn ferrites

“…Fig. 2 shows the diffraction angles (2y) and lattice parameters (a) of Sn-substituted MnZn ferrites, which indicates that with increase of Sn substitute concentration, the diffraction peaks shift slightly towards lower angles and lattice parameters increase [13]. Fig.…”