Effect of different fuels on the strontium hexaferrite nanopowder synthesized by a surfactant-assisted sol–gel auto-combustion method

Hasab, Mehdi Ghobeiti; Ebrahimi, S.A. Seyyed; Badiei, Alireza

doi:10.1016/j.jnoncrysol.2006.12.048

Cited by 25 publications

(12 citation statements)

References 9 publications

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“…Sol-gel auto-combustion method in the presence of a complexing agent has aroused special interest because of the utilization of the heat released from the oxidation reaction of the hydrocarbon species used in reaction to lower the formation temperature. Both the powder characteristics and magnetic properties are dependent on flame temperature generated during combustion which intern depends on nature of the fuel, metal salts, complexing agent, oxidant, and pH adjusting agent [20,21].…”

Section: Introductionmentioning

confidence: 99%

Effect of Fuel on the Synthesis, Structural, and Magnetic Properties of M-Type Hexagonal SrFe12O19 Nanoparticles

Chawla

Kaur

Mudsainiyan

et al. 2014

J Supercond Nov Magn

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The aim of this work is to compare the formation temperatures, structural, and macroscopic magnetic properties of Sr-hexaferrite (SrM) in the presence of different fuels. In this research, SrM powder was synthesized by a sol-gel auto-combustion route using different hydroxycarboxylic acids: citric acid, tartaric acid, sucrose (gluconic acid), and lactic acid. Completion of reaction was followed by Fourier transform infrared spectroscopy (FT-IR) and X-ray diffraction (XRD). The obtained powders were further characterized by thermal gravimetric analysis-differential thermal analysis (TGA-DTA), energydispersive spectroscopy (EDS), and scanning electron microscopy (SEM). Their magnetic properties were studied using Mössbauer spectroscopy and magnetic measurements were done by vibrating sample magnetometer (VSM). The influence of different fuels was reflected on the formation temperature, phase purity, and morphology of crystallites as well as on their magnetic properties. The results show the finest crystallite size has been obtained as 27.85 nm (from XRD) in the case of sucrose sample. The lowest

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Section: Introductionmentioning

confidence: 99%

Effect of Fuel on the Synthesis, Structural, and Magnetic Properties of M-Type Hexagonal SrFe12O19 Nanoparticles

Chawla

Kaur

Mudsainiyan

et al. 2014

J Supercond Nov Magn

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“…The vibrational modes of tetrahedral clusters are higher than that of octahedral clusters due to the shorter bond length of tetrahedral clusters. [19][20][21] It can also be observed that with the increase of nickel doping content (i.e., x), the value of FT-IR characteristic frequencies for SrFe 12−x Ni x O 19 samples were shifted to a lower wavenumber due to Ni 2+ ions with a heavier atomic weight than Fe 3+ ions and the wavenumber being inversely proportional to the atomic weight. 22 Besides, the minor adsorption peak at 1625 cm −1 exhibits the stretch and bending bands of the surface hydrogen group (-OH) earned from wet atmosphere.…”

Section: Powders Characterizationmentioning

confidence: 95%

Influence of nickel substitution on crystal structure and magnetic properties of strontium ferrite preparation via sol-gel auto-combustion route

Roohani

Arabi

Sarhaddi

2018

Int. J. Mod. Phys. B

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In this research, SrFe[Formula: see text]Ni[Formula: see text]O[Formula: see text] (x [Formula: see text] 0 − 1) hexagonal ferrites were prepared by sol-gel auto-combustion method. Effect of Ni substitution on structural, morphological and magnetic properties of nanoparticles was investigated by X-ray diffraction (XRD), Fourier transform infrared (FT-IR), Transmission electron microscopy (TEM) and vibrating sample magnetometer (VSM), respectively. The XRD results confirmed that all samples with x [Formula: see text] 0.5 have single phase M-type strontium ferrite structure, whereas for the SrFe[Formula: see text]Ni[Formula: see text]O[Formula: see text] samples with x [Formula: see text] 0.5, the spinel NiFe2O4 phase has also appeared. The lattice parameters and crystallite sizes of the powders were concluded from the XRD data and Williamson–Hall method. Magnetic analyses showed that the coercivity of powders decreased from 5672 Oe to 639 Oe while the saturation magnetization increased from 74 emu/g to 81 emu/g with nickel substitution. The results of this study suggest that the strontium hexaferrites doped with Ni are suitable for applications in high density magnetic recording media as well as microwave devices because of their promising magnetic properties.

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“…In this research, a sol-gel combustion technique using nitrate-citrate gels prepared from metal nitrates and citric acid solutions has been applied to synthesize barium hexaferrite nanopowder. It is a low-cost technique suitable for the mass production, when compared to the other mentioned methods, and the formation temperature of barium hexaferrite and its crystallite size in presence of polyethylene glycol with different molecular weight were compared [13]. Effect of chain length of polyethylene glycol is investigated on formation of its physical structure and magnetic properties.…”

Section: Introductionmentioning

confidence: 99%

A Comparative Study on Magnetostructural Properties of Barium Hexaferrite Powders Prepared by Polyethylene Glycol

Durmuș

2014

Journal of Nanomaterials

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Nanocrystalline particles of barium hexaferrite were synthesized by a sol-gel combustion route using nitrate-citrate gels prepared from metal nitrates and citric acid solutions with Fe/Ba molar ratio 12. The present paper aims to study the effect of addition of polyethylene glycol (PEG) solutions with different molecular weights (MW: 400, 2000, and 10.000 g/mol) on magnetostructural properties of barium hexaferrite. The formation of the barium hexaferrite was inspected using X-ray diffraction (XRD) analysis, Fourier transform infrared (FT-IR) analysis, thermogravimetric (TGA) analysis, scanning electron microscopy (SEM) analysis and vibrating sample magnetometer (VSM) analysis for magnetic measurements.

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Effect of different fuels on the strontium hexaferrite nanopowder synthesized by a surfactant-assisted sol–gel auto-combustion method

Cited by 25 publications

References 9 publications

Effect of Fuel on the Synthesis, Structural, and Magnetic Properties of M-Type Hexagonal SrFe12O19 Nanoparticles

Effect of Fuel on the Synthesis, Structural, and Magnetic Properties of M-Type Hexagonal SrFe12O19 Nanoparticles

Influence of nickel substitution on crystal structure and magnetic properties of strontium ferrite preparation via sol-gel auto-combustion route

A Comparative Study on Magnetostructural Properties of Barium Hexaferrite Powders Prepared by Polyethylene Glycol

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