Tailoring the Structural and Magnetic Properties and of Nickel Ferrite by Auto Combustion Method

Shanmugavel, T.; Raj, S. Gokul; Rajarajan, G.; Kumar, G. Ramesh

doi:10.1016/j.mspro.2014.07.158

Cited by 37 publications

(13 citation statements)

References 15 publications

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“…Table 1 also includes the values of molecular weight (M) and cell volume (V). Miller indices (hkl) and inter-planar spacing (d) of NiFe 2 O 4 and Ni 0.7 Co 0.3 Fe 2 O 4 are listed inTable 2[17]. Our results are in good agreement with that reported in the literature.Figure 2 represents the Fourier transform infrared (FTIR) spectra of NiFe 2 O 4 and Ni 0.7 Co 0.3 Fe 2 O 4 ferrite powders.…”

supporting

confidence: 90%

Effect of cobalt substitution on structural, electrical and magnetic properties of NiFe2O4

Kannipamula¹,

Matangi²,

Gondu³

et al. 2017

PAC

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Nickel ferrite and cobalt substituted nickel ferrite were synthesized by sol-gel method using citric acid as chelating reagent. X-ray diffraction revealed the formation of nanocrystalline particles having spinel structure with space group Fd3m. FTIR spectra showed fundamental absorption bands in the range 400-1300 cm-1 , related to iron ions on both octahedral and tetrahedral sites which are typical for ferrite structure. SEM analyses confirmed that the particles are agglomerated with an average size of about 1.5 µm. The ferrite powders were pressed at 5 MPa and sintered at 1200°C for 5 h. Conductivities, impedance analyses and dielectric properties of NiFe 2 O 4 and Ni 0.7 Co 0.3 Fe 2 O 4 ceramics were investigated over the frequency range of 20 Hz to 1 MHz at room temperature. The obtained experimental results are in good agreement with the reported values.

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supporting

confidence: 90%

Effect of cobalt substitution on structural, electrical and magnetic properties of NiFe2O4

Kannipamula¹,

Matangi²,

Gondu³

et al. 2017

PAC

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“…Spinel ferrite nanoparticles (SF-NPs) adopting the general A 2+ Fe2 3+ O4 formula with A = Ni [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17], Ni-Zn [1,2,8,, Mn [1,[60][61][62], Co [1,60,61,[63][64][65][66][67][68][69][70][71][72][73], Co-Zn [74][75][76][77][78][79], Ni-Cu [43], Zn [80][81][82][83][84][85], Mn-Zn…”

Section: Introductionmentioning

confidence: 99%

Microstructural and magnetic characterization of Ni0.5Zn0.5Fe2O4 ferrite nanoparticles

Bajorek

Berger

Dulski

et al. 2019

Journal of Physics and Chemistry of Solids

106

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The comprehensive study of the Ni0.5Zn0.5Fe2O4 ferrite nanopowder crystallized in the inverse spinel structure and synthesized by co-precipitation method is presented. The distribution of Fe 3+ cations among tetrahedral and octahedral sites was confirmed. The microstructural investigations revealed the presence of ultrafine grained structure with an average crystallites size in the range of 14 ÷ 20 nm. Raman and Fourier-Transform Infrared (FTIR) spectroscopy studies confirmed typical spinel structure with tetrahedrally and octahedrally iron occupancy as well as indicate co-associated iron-oxide phases considered as factors responsible for the structural disorder. The magnetic properties revealed the superparamagnetic behavior at the room temperature with estimated critical size of single domain particles about 63 nm. The analysis of saturation magnetization pointed to the spin canting phenomenon in the surface layer. The valuation of exchange coupling parameters based on the mean field theory calculation strengthened the conclusion about opposite magnetization arrangement between tetrahedral and octahedral magnetic sublattices.

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“…The H c variation with particle size could be the consequence of the domain structure, critical diameter, and anisotropy of the crystals [ 51 ]. The decrease of H c value could be associated with larger magneto crystalline anisotropy, while the increase of H c could be associated with the scattering in the anisotropy field directions and with inhomogeneous broadening [ 52 ]. The magnetic properties of CuFe 2 O 4 were also reported to be strongly dependent on particle size, shape, and purity [ 53 ].…”

Section: Resultsmentioning

confidence: 99%

Formation, Structure and Magnetic Properties of MFe2O4@SiO2 (M = Co, Mn, Zn, Ni, Cu) Nanocomposites

2021

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The formation, structure, and thermal and magnetic properties of MFe2O4@SiO2 (M = Co, Mn, Zn, Ni, Cu) (60% MFe2O4/40% SiO2) nanocomposites produced by a modified sol-gel method, followed by annealing at 300, 600, 900 and 1200 °C, were studied. The thermal analysis and Fourier transform infrared spectroscopy showed the formation of metal-glyoxylates below 210 °C and their decomposition into the corresponding ferrite around 300 °C. The evolution of crystalline phases and variation of crystallite sizes differs from ferrite to ferrite and depends on the annealing temperature. The magnetic measurements revealed the dependence of saturation and remanent magnetization, coercivity, and anisotropy on ferrite type, annealing temperature, and particle size. By annealing the nanocomposites (NCs) at 1200 °C paramagnetic MnFe2O4, CoFe2O4, NiFe2O4 and CuFe2O4 and antiferromagnetic ZnFe2O4 are obtained.

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Tailoring the Structural and Magnetic Properties and of Nickel Ferrite by Auto Combustion Method

Cited by 37 publications

References 15 publications

Effect of cobalt substitution on structural, electrical and magnetic properties of NiFe2O4

Effect of cobalt substitution on structural, electrical and magnetic properties of NiFe2O4

Microstructural and magnetic characterization of Ni0.5Zn0.5Fe2O4 ferrite nanoparticles

Formation, Structure and Magnetic Properties of MFe2O4@SiO2 (M = Co, Mn, Zn, Ni, Cu) Nanocomposites

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