Structural, Electrical, Dielectric, and Magnetic Properties of Cd<sup>2+</sup> Substituted Nickel Ferrite Nanoparticles

Devmunde, B. H.; Raut, A. V.; Birajdar, Shankar D.; Shukla, Shashwat; Shengule, D. R.; Jadhav, K. M.

doi:10.1155/2016/4709687

Cited by 40 publications

(9 citation statements)

References 41 publications

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“…So, έ decreases as increases of the applied field. Same behavior was observed in many spinel ferrites [55,56]. Fig.…”

Section: Dielectric Propertiessupporting

confidence: 77%

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Impact of Chromium Doping on Structural, Optical, Magnetic and Electrical Properties of Nano-Copper Ferrite

GAD¹,

MOUSTAFA²,

AZAB³

et al. 2020

JOR

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Nanoparticles copper ferrites doped with chromium CuCrxFe2- xO4 (0≤x≤ 0.25) were prepared using sol-gel auto combustion. Analysis of XRD revealed that the samples crystallized in single phase tetragonal CuFe2O4 structure. Results of Rietveld refinement using Full proff program showed that the lattice parameter a increased, lattice parameter c, the unit cell volume and tetragonal distortion decreased with increasing Cr3+ concentration. A cation distribution ensured that a system (CuCrFeO4) is completely inverse and distorted. In addition, crystallite size increased with the increase of Cr3+content.Furthermore, optical energy band gap of the obtained spinel ferrite decreased from 2.441eV to 2.228 eV with the increase of Cr. Results of magnetic properties indicated that the saturation magnetization decreased from 24.1 to18.3 emu/g with Cr increment, due to a lower magnetic moment of Cr3+ ion (3mB) than that of Fe3+ ion (5mB).Coercivity decreases with increasing Cr-concentration can be attributed to the reduction in magnetocrystalline anisotropy (K) where, chromium ferrite has negative magnetocrystalline anisotropy. Squareness ratio decreased continuously with Cr content, which it displayed that the materials exhibited to soft magnetic properties. Dielectric properties were analyzed in frequency range (0.1-7MHz) at different temperatures (50- 150ºC).From electrical measurements, it was found that έ decreased at lower frequency, become nearly constant at higher frequencies for all samples and increased with increasing temperature. έ was found to increase with increasing Cr because the Cr is reducing the hopping probabilities across the grain boundaries. . Also, it was found that activation energy ΔE decreased with increasing Cr concentration.

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“…So, έ decreases as increases of the applied field. Same behavior was observed in many spinel ferrites [55,56]. Fig.…”

Section: Dielectric Propertiessupporting

confidence: 77%

“…From Fig. 10 (a, b, & c) it is clearly shown that, έ decreases steeply at lower frequency and become nearly constant values for all samples at higher frequencies and increases with increasing temperature which are in agreement with spinel ferrites [55,56]. Same behavior can be obtained for ἕ as shown in Fig.…”

Section: Dielectric Propertiessupporting

confidence: 77%

Impact of Chromium Doping on Structural, Optical, Magnetic and Electrical Properties of Nano-Copper Ferrite

GAD¹,

MOUSTAFA²,

AZAB³

et al. 2020

JOR

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“…For samples with x  0.3 the TC determined theoretically agrees very well with experimentally determined TC indicating the applicability of theoretical model to the present study. The experimental values TC are lower than that of reported by Devmunde et al [16] and are higher than that of reported by Lee et al [15]. The reduction of Curie temperature in the synthesized nanoparticles is attributed to the existence of a "dead" surface layer for each particle in which magnetic moments do not contribute to the magnetization in the applied field [17].…”

Section: Fig 5 -Variation Of Magnetic Permeability With Composition Xcontrasting

confidence: 54%

Influence of Cd2+ Ions Substitution on the Magnetic Properties of Ni-Cd Ferrites

Bushkova¹

2017

J. Nano- Electron. Phys.

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The polycrystalline of Ni-Cd ferrites were prepared by the technology sol-gel with participation of autocombustion and sintered at temperature 1573 K in air. Low field hysteresis measurement was carried out at room temperature at frequency of 200 Hz and at the field range 1600-16000 A/m. The increase of Cd 2+ ions yields the increase of specific saturation magnetization σs and magnetic moment mexp up to x  0.3 then decrease thereafter. The Neel's two sublattice model can be applied to the sample up to x  0.3. The composition dependence of the specific saturation magnetization and magnetic moment for 0.4 ≤ x ≤ 0.6 were explained on the basis of the existence of Yafet-Kittel angles on the B-site spins. The temperature variation of the initial permeability μi of these samples was carried out from 300 to 900 K. The initial permeability increases with increasing Cd content up to x  0.3 after that it decreases. It was found that Curie temperature Tc decreases from 831 to 697 K.

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“…Though there are other absorption peaks, the dominants are the mentioned ones showing the ferrites' spinel structures. Moreover, in our case, the tetrahedral and octahedral site vibration could be inferred to the samples' constituent cations, i.e., Zn-O-Al-Cr and Ni-O vibrations, respectively [17].…”

Section: Ftir Analysismentioning

confidence: 56%

Al³⁺ and Cr³⁺ co-substituted NiZnCo nano ferrites: synthesis and structural properties

Priya

Murali

Sailaja

et al. 2022

IOP Conf. Ser.: Mater. Sci. Eng.

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The Al3+ and Cr3+ substituted in Ni0.4Zn0.35Co0.25Fe2-x-yAlxCryO4 (x = y = 0.0, 0.05, 0.1, 0.15 and 0.2) ferrite nanoparticles were prepared with sol-gel method. X-ray diffraction (XRD), Field Effect Scanning Microscopy (FESEM), and Fourier Transform Inferred Spectroscopy (FT-IR) were used for their characterization. They have a single-phase spinel structure. The lattice constant decreases with increasing concentrations. Agglomerated small particles with stoichiometric proportions were obtained from FESEM. The region around 600 cm-1 and 400 cm-1 has two absorption bands related to two interstitial sites by FTIR agree with the spinel lattice.

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Structural, Electrical, Dielectric, and Magnetic Properties of Cd²⁺ Substituted Nickel Ferrite Nanoparticles

Cited by 40 publications

References 41 publications

Impact of Chromium Doping on Structural, Optical, Magnetic and Electrical Properties of Nano-Copper Ferrite

Impact of Chromium Doping on Structural, Optical, Magnetic and Electrical Properties of Nano-Copper Ferrite

Influence of Cd2+ Ions Substitution on the Magnetic Properties of Ni-Cd Ferrites

Al³⁺ and Cr³⁺ co-substituted NiZnCo nano ferrites: synthesis and structural properties

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Structural, Electrical, Dielectric, and Magnetic Properties of Cd2+ Substituted Nickel Ferrite Nanoparticles

Cited by 40 publications

References 41 publications

Impact of Chromium Doping on Structural, Optical, Magnetic and Electrical Properties of Nano-Copper Ferrite

Impact of Chromium Doping on Structural, Optical, Magnetic and Electrical Properties of Nano-Copper Ferrite

Influence of Cd2+ Ions Substitution on the Magnetic Properties of Ni-Cd Ferrites

Al3+ and Cr3+ co-substituted NiZnCo nano ferrites: synthesis and structural properties

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Product

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Structural, Electrical, Dielectric, and Magnetic Properties of Cd²⁺ Substituted Nickel Ferrite Nanoparticles

Al³⁺ and Cr³⁺ co-substituted NiZnCo nano ferrites: synthesis and structural properties