Nanocrystallite size effect on σs and Hc in nanoparticle assemblies

Influence of silicon dioxide medium on the structural and electrical properties of nickel zinc ferrite

“…For sample S 2 (sintered at 1000 • C), the lattice parameter is 8.391 Å and it differs by 0.01 Å from previously reported results [28][29][30]. In these references the ferrite precursor is the same and a silica medium is absent, so the close agreement of the lattice parameter indicates that the crystalline structure of ferrite is not affected by the silica medium.…”

“…• C with mass loss of 0.233 mg/min is due to the oxidation reaction of metal nitrates with the elimination of volatile components of the reaction product [10,12,[28][29][30] Sample S 6 (shown in Figure 2) has two prominent loss peaks at 145. …”

A study on Cu substituted chemically processed Ni–Zn–Cu ferrites

“…This is due to the increase of the mean diameter of the nanocrystals. The critical diameter, d cr can be calculated using the following equations [7,8]:…”

Structural, magnetic and Mössbauer spectral studies of nanocrystalline Ni0.5Zn0.5Fe2O4 ferrite powders

“…Studies on various aspects of nanocrystalline ferrites, synthesized by different wet chemical methods, have been reported in the literature [9,[21][22][23][24][25][26][27][28]. For MnFe 2 O 4 , an increase in the Curie temperature as high as 97 K, when compared with that of the bulk material is reported, when the particle size is reduced to 7.5 nm [9].…”