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Influence of Nd3+ substitution on structural, electrical and magnetic properties of nanocrystalline nickel ferrites

“…This is attributed to weaker Nd-Fe interaction than Fe-Fe interaction for Nd 3+ substitution. Such reduction in Curie temperature due to Nd 3+ and rare earth ions (R = Yb, Er, Sm, Tb, Gd, Dy and Ce) substitution in Mg-Zn and Ni-Zn ferrites is reported [59,60]. Bharathi et al [25] reported that the substitution of Dy for Fe causes a decrease in Curie temperature of the nickel ferrite.…”

Structural and magnetic properties of pure and doped nanocrystalline cadmium ferrite

“…(ii) Concerning Al 3+ and Mg 2+ ions distribution, there are two points of view. The first one is that the Mg 2+ ions in spinel ferrite are distributed on both tetrahedral and octahedral sites, such that the majority of Mg 2+ ions occupy the tetrahedral position [9]. The other one is that Al 3+ ions occupy completely B-sites [8].…”

“…It has been found that the ferrites of similar composition differ in their physical and chemical properties depending on distribution of cations, having different oxidation states, among the available tetrahedral and octahedral sites. The cation distribution depends on the preparation technique as well as the processing parameter therein, such as the thermal history of constituent oxides and doping process [9]. The calcination temperature and particle size of the synthesized ferrites could be reduced by doping with small amounts of foreign ions [5].…”

Influence of Cd2+ and Cr3+ substitutions on the magnetization and permeability of magnesium ferrites

“…Mixed ferrites as Mg-Mn [6], Mg-Zn [7] have numerous applications in electronic and microwave fields. The magnetic properties of mixed ferrites Mg-Zn [8], Mg-Cd [9] Mg-Mn [6] and Mg-Cu-Zn [10] have already been studied. Trivalent substitution of Nd 3+ ions causes a decrease in the magnetic moment of Mg-Zn ferrites [8].…”

“…The magnetic properties of mixed ferrites Mg-Zn [8], Mg-Cd [9] Mg-Mn [6] and Mg-Cu-Zn [10] have already been studied. Trivalent substitution of Nd 3+ ions causes a decrease in the magnetic moment of Mg-Zn ferrites [8]. Al 3+ -substituted Mg-Mn ferrite has been studied by Singh et al [11] for high-frequency applications.…”