Synthesis, characterization and magnetic properties on nanocrystalline BaFe12O19 ferrite

Li, Yaowen; Qin, Wang; Yang, Hua

doi:10.1016/j.cap.2009.03.002

Cited by 84 publications

(24 citation statements)

References 15 publications

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“…The properties of barium hexaferrite offer much prospects for designing materials with magnetic losses. This material is characterized by large coercive force, high Curie temperature, it possesses favorable chemical and corrosion stability 20,21 . But in its original form it is not suitable to be shielding material because it has a high density and weak dielectric loss.…”

Section: Introductionmentioning

confidence: 99%

Electrodynamic properties of the nanocarbon/polymer composites with aligned by magnetic field secondary non-conductive component

et al. 2015

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Multiwall carbon nanotubes/epoxy and graphite nanoplatelets/epoxy composite materials (2-5 wt %) as well as the composite materials with barium hexaferrite as secondary filler (27 wt %) were prepared. Alignment of barium hexaferrite nanoparticles was performed by magnetic field action during polymerization process. Morphology, the electrical conductivity and shielding efficiency of the composite materials in the frequency range of 36-55.5 GHz were investigated. Optical and electron microscopy, standard 2-and 4-probe methods of electrical conductivity measurement and network analyzer were used for that purpose. The arguments about secondary filler addition and its alignment on electrodynamic properties of the obtained composite materials are given.

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Section: Introductionmentioning

confidence: 99%

Electrodynamic properties of the nanocarbon/polymer composites with aligned by magnetic field secondary non-conductive component

et al. 2015

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“…On the technological side, it has been used to manufacture permanent magnets, magnetic recording media, microwave devices and circuits, magneto-optic media, signal processing devices, telecommunications devices, supercapacitors and microwave filters [6][7][8][9][10][11][12][13]. Synthesis of nano-scale particles of BaFe 12 O 19 can be achieved through different methods including: co-precipitation [14,15], sol-gel [16,17], carbon combustion [18], citrate auto-combustion [19] and hydrothermal [20].…”

Section: Introductionmentioning

confidence: 99%

Influence of cobalt addition and calcination temperature on the physical properties of BaFe₁₂O₁₉ hexaferrites nanoparticles

Rekaby

Shehabi

Awad

2020

Mater. Res. Express

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Nano-scale particles of pure Barium hexaferrite 'BaFe 12 O 19 ' and Cobalt added Barium hexaferrite 'Co x BaFe 12 O 19 ', with x=0.04, 0.06 and 0.1 wt%, were successfully synthesized by the chemical coprecipitation method. The synthesized powder was subjected to different calcination temperatures (T=850°C, 900°C, 950°C and 1050°C). X-ray powder diffraction (XRD) clarified that nearly single phase of BaFe 12 O 19 with tiny traces of Fe 2 O 3 phase were obtained when the precursor was calcined at 1050°C for 2 h. The lattice parameters and unit cell volume were almost unchanged with either Cobalt addition or calcination temperatures. From Debye-Scherrer equation, the crystallite size (D) was found to gradually increase with increasing calcination temperature to reach its maximum values for samples calcined at 1050°C. The formation of Barium hexaferrite phase was also confirmed from Fourier transform infrared (FTIR) spectra through the existence of strong absorption peaks that appeared between 581 cm −1 and 435 cm −1 . The morphology and grain size of the samples were examined using transmission electron microscopy (TEM) technique. Optical properties of the samples were studied through ultraviolet 'UV' visible spectroscopy. The optical band gap (E g ) of the samples was obtained from Tauc relation as function of Cobalt addition (x) and calcination temperature (T). Finally, the mechanical properties were examined using Vickers microhardness. The microhardness data revealed that the samples exhibited reverse indentation size effect (RISE). The Elastic modulus (E) and yield strength (Y) for the prepared samples were calculated, in accordance with Vickers microhardness, as function of Cobalt addition. Furthermore, the indentation size effect ISE was analyzed using indentation induced cracked model (IIC). The IIC model was found to be a suitable model for describing the microhardness results of the prepared samples. Time dependent Vickers microhardness was done through indentation creep test at different dwell time (t=10, 20, 30, 40 and 50 s) and constant applied loads (F=0.98, 4.90 and 9.80 N). Results clarified that the specimens revealed grain boundary sliding together with dislocation climbs at small loads and a dislocation creep in the operating creep process for greater loads.

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“…The increasing current demand of low cost, excellent chemically stabile and corrosion resistivite M-type BaFe 12 O 19 was further studied for microwave communication, microwave dark room, the anti-electromagnetic wave radiation applications [13,14]. In this purpose, we synthesized M-type barium hexagonal ferrite (BaFe 12 O 19 ) and to tune the structural and magnetic properties irradiated by swift heavy ion irradiation.…”

Section: Introductionmentioning

confidence: 99%

Effect of 200 MeV Ag¹⁶⁺ swift heavy ion irradiation on structural and magnetic properties of M-type barium hexaferrite

Packiaraj

Sakthipandi²,

Hossain

2019

Mater. Res. Express

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M-type barium hexagonal ferrite (BaFe 12 O 19 ) has been synthesized by sol-gel auto combustion method. The synthesized material was irradiated with 200 MeV Ag 16+ ions using the 15UD Pelletron tandem accelerator and the changes in structural and surface morphology of material were investigated. The pristine (as-synthesised) and irradiated samples were characterized using different experimental techniques like x-ray diffraction (XRD), Fourier-transform infrared spectroscopy, transmission electron microscope (TEM) and vibrating sample magnetometer (VSM). The strong absorption peak between 580 and 440 cm −1 in the infrared spectrum and XRD confirmed the formation of ferrite structure for both irradiated and pristine samples. XRD peaks for the irradiated barium hexagonal ferrite were slightly broadened when compared pristine ferrite samples. The crystallite size of the irradiated barium hexagonal ferrite was higher than that of pristine barium hexagonal ferrite and is consistent with TEM images. Both saturation magnetization and coercivity were decreased with irradiation.

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Synthesis, characterization and magnetic properties on nanocrystalline BaFe12O19 ferrite

Cited by 84 publications

References 15 publications

Electrodynamic properties of the nanocarbon/polymer composites with aligned by magnetic field secondary non-conductive component

Electrodynamic properties of the nanocarbon/polymer composites with aligned by magnetic field secondary non-conductive component

Influence of cobalt addition and calcination temperature on the physical properties of BaFe₁₂O₁₉ hexaferrites nanoparticles

Effect of 200 MeV Ag¹⁶⁺ swift heavy ion irradiation on structural and magnetic properties of M-type barium hexaferrite

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Synthesis, characterization and magnetic properties on nanocrystalline BaFe12O19 ferrite

Cited by 84 publications

References 15 publications

Electrodynamic properties of the nanocarbon/polymer composites with aligned by magnetic field secondary non-conductive component

Electrodynamic properties of the nanocarbon/polymer composites with aligned by magnetic field secondary non-conductive component

Influence of cobalt addition and calcination temperature on the physical properties of BaFe12O19 hexaferrites nanoparticles

Effect of 200 MeV Ag16+ swift heavy ion irradiation on structural and magnetic properties of M-type barium hexaferrite

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Influence of cobalt addition and calcination temperature on the physical properties of BaFe₁₂O₁₉ hexaferrites nanoparticles

Effect of 200 MeV Ag¹⁶⁺ swift heavy ion irradiation on structural and magnetic properties of M-type barium hexaferrite