Effect of Chemical Reaction Temperature on Magnetic Properties of NiCuZn Ferrites

Shinde, Neelam S.; Khot, Sujata S.; Basavaiah, N.; Watawe, S.C; Vaidya, Milind M.

doi:10.1109/tmag.2014.2329328

Cited by 1 publication

(2 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The lattice constant of pristine Ni 0.65 Zn 0.35 Fe 2 O 4 ferrite is found to well match with the reported values but prepared in different methods [16]. A monotonic decrease in the lattice constant has been found with increasing Cu substitution.…”

Section: X-ray Diffraction and Ir Studiessupporting

confidence: 82%

See 1 more Smart Citation

Structural, Magnetic, and Electrical Properties of Ni0.65Zn0.35−x Cu x Fe2 O 4 Nanoferrite System

Venkatesh

Himavathi

Ramesh

2015

J Supercond Nov Magn

View full text Add to dashboard Cite

Copper-substituted Ni-Zn nanoferrite system having the composition of Ni 0.65 Zn 0.35−x Cu x Fe 2 O 4 (x = 0.00, 0.05, 0.10, 0.15, 0.20, 0.25) has been prepared by autocombustion method. Structural and magnetic characterizations were done on the as-prepared powders while the dc electrical conductivity measurements were studied on pellets sintered at 900 • C. X-ray diffraction measurements of all the samples showed a single spinel phase. The lattice parameter has been found to decrease with increasing Cu, and this variation in the spinel unit cell is ascribed to the difference in the ionic radius of Cu 2+ and Zn 2+ ions. The average crystallite size was determined using the Scherrer equation. The dc electrical resistivity of nanocrystalline starting composition Ni 0.65 Zn 0.35 Fe 2 O 4 was few orders of magnitude higher than the bulk Ni 0.65 Zn 0.35 Fe 2 O 4 prepared by conventional ceramic method. However, Curie's temperatures and dielectric constant were decreased with increasing copper concentration. The observed variation in dc electrical resistivity and activation energy for conduction with Cu 2+ substitution is attributed to changes in the microstructure , structural defects, and hopping mechanism.

show abstract

Section: X-ray Diffraction and Ir Studiessupporting

confidence: 82%

“…Therefore, the distribution of cations among the tetrahedral (A) and octahedral (B) sublattices for the starting composition is estimated as Since Cu ions have strong preference to occupy B sites[16], this result in the migration of ferric ions from octahedral (B) to tetrahedral (A) sites takes place. The cation distribution is now modified as…”

mentioning

confidence: 99%