Cation distribution in Cu-substituted manganese ferrites

Rana, M.U.; Misbah-ul-Islam,; Abbas, Tahir

doi:10.1016/s0167-577x(99)00102-0

Cited by 22 publications

(12 citation statements)

References 6 publications

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“…NiFe 2 O 4 and CuFe 2 O 4 [18,19] are both inverse spinel in structure in which half of the ferric ions preferentially occupy the tetrahedral (A sites) and the other half occupy the octahedral sites (B sites).…”

Section: Resultsmentioning

confidence: 99%

Low temperature-fired Ni-Cu-Zn ferrite nanoparticles through auto-combustion method for multilayer chip inductor applications

2012

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Ferrite nanoparticles of basic composition Ni0.7-xZnxCu0.3Fe2O4 (0.0 ≤ x ≤ 0.2, x = 0.05) were synthesized through auto-combustion method and were characterized for structural properties using X-ray diffraction [XRD], scanning electron microscopy, transmission electron microscopy, and Fourier transform infrared spectroscopy [FT-IR]. XRD analysis of the powder samples sintered at 600°C for 4 h showed the cubic spinel structure for ferrites with a narrow size distribution from 28 to 32 nm. FT-IR showed two absorption bands (v1 and v2) that are attributed to the stretching vibration of tetrahedral and octahedral sites. The effect of Zn doping on the electrical properties was studied using dielectric and impedance spectroscopy at room temperature. The dielectric parameters (ε', ε″, tanδ, and σac) show their maximum value for 10% Zn doping. The dielectric constant and loss tangent decrease with increasing frequency of the applied field. The results are explained in the light of dielectric polarization which is similar to the conduction phenomenon. The complex impedance shows that the conduction process in grown nanoparticles takes place predominantly through grain boundary volume.PACS: 75.50.Gg; 78.20; 77.22.Gm.

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Section: Resultsmentioning

confidence: 99%

Low temperature-fired Ni-Cu-Zn ferrite nanoparticles through auto-combustion method for multilayer chip inductor applications

2012

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“…It can be observed that the decrease in magnetization is reflected from the ratio of cation occupation in the spinel lattice. The decrease in the fraction of Fe 3 þ ion in B sites is responsible for the decrease in saturation magnetization [11].…”

Section: Magnetic Propertiesmentioning

confidence: 99%

Physical and electromagnetic properties of nanosized Gd substituted Mg–Mn ferrites by solution combustion method

Lwin

Fauzi

Sreekantan

et al. 2015

Physica B: Condensed Matter

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“…This figure shows that the "a" lattice parameter a increases with increasing Mn content due to the difference in the ionic radii between Mn 2+ (0.66 Å) and Cu 2+ (0.57 Å) 14 . The increase in lattice parameter with composition can be explained on the basis of Vegard's law 15 . This law explains the linear variation in lattice parameter with the ionic radii of the doped and the Figure 4 show the temperature dependence of the electrical resistivity by the d.c measurements for all ferrites samples.…”

Section: Methodsmentioning

confidence: 99%

Magnetic and Electrical Properties of MnxCu1-xFe2O4 Ferrite

et al. 2016

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In the present work, mixed manganese-copper ferrite of composition Mn x Cu 1-x Fe 2 O 4 (within x=0. 40, 0.42, 0.44, 0.46, 0.48 and 0.50) have been investigated for their electric and magnetic properties such as dc resistivity, Curie temperature, saturation magnetization. Mn x Cu 1-x Fe 2 O 4 ferrite samples were prepared by uniaxial pressing from the oxide mixture, synthesized at 1000°C during 45 hours and finally heated to 1200°C by 5h, at room atmosphere. The X-ray diffractograms show that the samples with different compositions were formed by compact structure spinel with cubic cell. The saturated magnetization of the Mn x Cu 1-x Fe 2 O 4 ferrites increased with x up to 0.46, which presented the smallest coercitive field. All samples showed hysteresis characteristic of soft magnetic materials. This electrical behavior is compatible with an insulator. The results were analyzed in the framework of grain/barrier model.

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Cation distribution in Cu-substituted manganese ferrites

Cited by 22 publications

References 6 publications

Low temperature-fired Ni-Cu-Zn ferrite nanoparticles through auto-combustion method for multilayer chip inductor applications

Low temperature-fired Ni-Cu-Zn ferrite nanoparticles through auto-combustion method for multilayer chip inductor applications

Physical and electromagnetic properties of nanosized Gd substituted Mg–Mn ferrites by solution combustion method

Magnetic and Electrical Properties of MnxCu1-xFe2O4 Ferrite

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