AC impedance studies on LiFe5−xMnxO8 ferrites

Ramesh, B.; Ramesh, S.; Kumar, Rahul; Rao, M. Venkateshwara

doi:10.1016/j.jallcom.2011.10.038

Cited by 55 publications

(11 citation statements)

References 17 publications

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“…Substitution of magnetic and non-magnetic cations in ferrite materials changes their magnetic and electrical properties [31][32][33]. The changes in physical and chemical properties of ion substituted spinel ferrites arise from the ability of these compounds to distribute the cations between the available A-sites (tetrahedral) and B-sites (octahedral) [34][35][36].…”

Section: Introductionmentioning

confidence: 99%

Hydrothermal synthesis and characterizations of Ti substituted Mn-ferrites

Mostafa

Hessien

Shaltout

2012

Journal of Alloys and Compounds

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Section: Introductionmentioning

confidence: 99%

Hydrothermal synthesis and characterizations of Ti substituted Mn-ferrites

Mostafa

Hessien

Shaltout

2012

Journal of Alloys and Compounds

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“…4); this behavior indicates a decrease in relaxation time. 17 In the case of CoGa 0.2 Fe 1.8 O 4 (Fig. 4(c)), the Cole-Cole plot measured at 150 o C exhibited an incomplete semicircle due to the high resistance value at low frequencies.…”

Section: Resultsmentioning

confidence: 87%

Electrical transport properties of CoMn0.2−xGaxFe1.8O4 ferrites using complex impedance spectroscopy

et al. 2016

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In this study, we report the influence of Ga content on the microstructural, magnetic, and AC impedance properties of Co-based ferrites with compositions of CoMn0.2−xGaxFe1.8O4 (x=0, 0.1, and 0.2) prepared by the solid-state reaction method. Experimental results showed that the as-prepared Co-based ferrites had a single-phase spinel structure; the Curie temperature of Co-based ferrites decreased with increasing Ga content. All ferrite samples exhibited a typical hysteresis behavior with good values of saturation magnetization at room temperature. The electrical properties of Co-based ferrites were investigated using complex impedance spectroscopy analysis in the frequency range of 100 kHz-50 MHz at temperatures of 150 to 250 oC. The impedance analysis revealed that the magnitudes of the real part (Z’) and the imaginary part (Z”) of complex impedance decreased with increasing temperature. Only one semicircle was observed in each complex impedance plane plot, which revealed that the contribution to conductivity was from the grain boundaries. It was found that the relaxation time for the grain boundary (τgb) also decreased with increasing temperature. The values of resistance for the grain boundary (Rgb) significantly increased with increasing Ga content, which indicated that the incorporation of Ga into Co-based ferrites enhanced the electrical resistivity.

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“…In general, this plot is used to identify the various components such as grain, grain-boundary, and electrode contribution to the impedance of the material and its effects appear as semi circles. The lower-and higher-frequency semicircles can be related to grain-boundary and grain contribution [26]. The complex impedance plot shows that only one incomplete semicircular arc is obtained for all the concentration of Mg 2+ ion substitution.…”

Section: Loss Factor Tan δmentioning

confidence: 92%

Magnetic and Electrical Properties of Magnesium-Substituted Ni–Zn Ferrites

Kavitha

Manohar

2016

J Supercond Nov Magn

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The effect of magnesium substitution in Ni-Zn ferrites (Ni 0.80−x Mg x Zn 0.20 Fe 2 O 4 , where x = 0, 0.10-0.50) was studied on its electrical and magnetic properties. Ni-Mg-Zn ferrites were synthesized by novel combustion method, followed by calcination at 900 • C. The X-ray diffraction (XRD) pattern shows that the prepared sample was a single-phase spinel cubic structure, and the calculated crystallite sizes were found to be in the range 44-48 nm. Fourier transform infrared spectroscopy (FTIR) spectra confirm the tetrahedral and octahedral modes of vibrations. The observed saturation magnetization values range from 37 to 63 emu/g for magnesium-added Ni-Zn ferrites. The increase in resistivity was observed with the addition of magnesium ions except for the concentration of x = 0.50. The change in dielectric behavior with respect to composition and frequency were studied.

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AC impedance studies on LiFe5−xMnxO8 ferrites

Cited by 55 publications

References 17 publications

Hydrothermal synthesis and characterizations of Ti substituted Mn-ferrites

Hydrothermal synthesis and characterizations of Ti substituted Mn-ferrites

Electrical transport properties of CoMn0.2−xGaxFe1.8O4 ferrites using complex impedance spectroscopy

Magnetic and Electrical Properties of Magnesium-Substituted Ni–Zn Ferrites

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