Preparation and magnetic properties of different morphology nano-SrFe12O19 particles prepared by sol–gel method

Wang, Yongfei; Li, Qiaoling; Zhang, Cunrui; Jing, Hongxia

doi:10.1016/j.jallcom.2007.12.037

Cited by 84 publications

(13 citation statements)

References 6 publications

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“…/Sr 2? molar ratio plays an important role in the formation of the single-phase strontium ferrite in the sol-gel method, for which a ratio smaller than stoichiometric is needed [14]. This can be attributed to the fact that the solubility of Sr(NO 3 ) 2 decreases at elevated temperatures, and so more Sr 2?…”

Section: Methodsmentioning

confidence: 99%

Fe/Sr ratio and calcination temperature effects on processing of nanostructured strontium hexaferrite thin films by a sol–gel method

Masoudpanah

Ebrahimi

2011

Res Chem Intermed

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Nanostructured single-phase strontium hexaferrite, SrFe 12 O 19 (SrM), thin films have been synthesized successfully for the first time on silicon substrates using a spin-coating sol-gel process. The precursor solution was prepared from metal nitrates, citric acid, and ethylene glycol. The thin films with various Fe/Sr molar ratios of 8-12 were heat treated at different temperatures from 700 to 900°C. The composition, microstructure, and magnetic properties of the SrM thin films were also characterized. The results showed that the optimum molar ratio for Fe/Sr was 10, at which the lowest calcination temperature for obtaining the single-phase strontium hexaferrite thin films was 800°C. The crystallite size of the resultant thin films was below 50 nm.

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Section: Methodsmentioning

confidence: 99%

Fe/Sr ratio and calcination temperature effects on processing of nanostructured strontium hexaferrite thin films by a sol–gel method

Masoudpanah

Ebrahimi

2011

Res Chem Intermed

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“…From Table 1, it has been observed that the coercivity of all the ferrites with KCl and KBr gets enhanced whereas it gets decreased when it was annealed with KI. This change in coercivity is due to the reason that the morphology anisotropy increases with KCl and KBr having ability to shield the phases and growth of hexaferrites in a particular direction whereas KI with annealing gets oxidized to I 2 and I À and is unable to act as shielding agent [7]. The anions Cl À and Br À with high coordination ability is absorbed to the crystal face of SrFe 12 O 19 micro-crystal to take the shielding effect.…”

Section: Magnetic Measurementsmentioning

confidence: 99%

“…Yongfei et al [7] have used inorganic agents like KCl, KBr and KI and reported that the morphology of strontium ferrite is different with all the three cases and coercivity values increases with KCl and KBr while it decreases www.elsevier.com/locate/ceramint with KI. Well developed hexagonal platelets of SrFe 12 O 19 hexaferrites were obtained when it was synthesized by molten salt method using NaCl and KCl [8].…”

Section: Introductionmentioning

confidence: 99%

A comparative study on the magnetic properties of MFe12O19 and MAlFe11O19 (M=Sr, Ba and Pb) hexaferrites with different morphologies

Singhal

Namgyal

Singh

et al. 2011

Ceramics International

104

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“…Several techniques have been used to prepare strontium hexaferrite powders; among these co-precipitation [3], hydrothermal [4], sol-gel [5,6], microemulsion [7] and citrate precursor [8] may be mentioned. Control of the morphology is important, since a strong correlation exists between the structure and magnetic properties of SrFe12O19 [9].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and structure of strontium ferrite nanowires and nanotubes of high aspect ratio

Ebrahimi

Ashrafizadeh

Bakhshi

et al. 2015

J Sol-Gel Sci Technol

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Strontium hexaferrite nanowires and nanotubes were synthesized in porous anodic aluminum oxide templates. Different solution-based synthesis techniques (spin coating, vacuum suction, and dip coating) were investigated. Strontium ferrite nanopowders were also synthesized by a similar sol-gel process. The morphology, structure, and composition of the embedded hexaferrite nanostructures were examined by field emission scanning electron microscope, X-ray diffraction, and transmission electron microscopy. Strontium ferrite wires with Fe/Sr ratios from 10 to 12 under different annealing temperatures of 500-700°C were studied. The results showed that dip coating could produce fine and uniform strontium ferrite nanowires. The ratio of Fe/Sr of 11 and a calcination temperature of 650°C were found to be optimum conditions. The produced material may be of importance for novel microwave-frequency nanoscale devices. Graphical Abstract

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Preparation and magnetic properties of different morphology nano-SrFe12O19 particles prepared by sol–gel method

Cited by 84 publications

References 6 publications

Fe/Sr ratio and calcination temperature effects on processing of nanostructured strontium hexaferrite thin films by a sol–gel method

Fe/Sr ratio and calcination temperature effects on processing of nanostructured strontium hexaferrite thin films by a sol–gel method

A comparative study on the magnetic properties of MFe12O19 and MAlFe11O19 (M=Sr, Ba and Pb) hexaferrites with different morphologies

Synthesis and structure of strontium ferrite nanowires and nanotubes of high aspect ratio

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