Effect of pelletization on magnetic properties of BaFe12O19

Sözeri, H.

doi:10.1016/j.jallcom.2009.07.072

Cited by 43 publications

(15 citation statements)

References 16 publications

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“…The intense peak at 1710 cm −1 (oleic acid molecule) is derived from the existence of the C=O stretch, and the band at 1285 cm −1 exhibits the presence of the C-O stretch. The O-H in-plane and outof-plane bands appear at 1462 cm −1 and 937 cm −1 , respectively [27][28][29][30][31]. A set of bands appear at 1381 and 848 cm −1 , which are attributed to the N-O stretching and bending vibrations of NO − 3 , respectively [32][33][34].…”

Section: Sem Analysismentioning

confidence: 97%

“…Z2P Z2 Oleicacid Z1 Z1P CH 2 strech C=O strech band at 1710 cm −1 (oleic acid molecule), which is assigned to stretching vibrations of C=O of the carboxyl group, disappears in the spectrum of the final magnetic fluid [27,35]. All these results suggest the existence of both oleic acid molecule and oleate in the magnetic par-ticles, thus leading to the conclusion that physical adsorption and chemical binding were formed on the surface of magnetic particles, resulting in significant improvement in hydrophobicity after modification.…”

Section: Ft-ir Analysismentioning

confidence: 99%

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The Effect of Condensation on the Morphology and Magnetic Properties of Modified Barium Hexaferrite (BaFe12O19)

et al. 2011

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Abstract:We present a comparison for the effect of condensation on the morphology and magnetic properties of oleic acid modified BaFe12O19 nanoparticles. Two different samples of BaFe12O19 nanoparticles were synthesized by dehydration (Z1) and rotary evaporation (Z2) method, respectively. Oleic acid was used as the surface modification agent to observe the morphological and magnetic changes. The nanoparticles were analyzed by XRD, FTIR, TGA, SEM, and VSM techniques for structural and physicochemical characteristics. Crystallographic analysis reveals the phase as hexaferrite and the average crystallite size of Z1 and Z2 is 21±3 nm and 17±2 nm, respectively. Rotary evaporator accelerates the condensation process in viscous gel (Z2). Due to the use of rotary evaporator, the coating with oleic acid for Z2 product has been accomplished very well, as compared with Z1. As a result, saturation magnetization of Z2 sample is much lower than that of Z1 sample.

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Section: Sem Analysismentioning

confidence: 97%

Section: Ft-ir Analysismentioning

confidence: 99%

The Effect of Condensation on the Morphology and Magnetic Properties of Modified Barium Hexaferrite (BaFe12O19)

et al. 2011

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“…The enhancement of magnetic properties such as saturated magnetization (Ms), remanence (Mr), and coercive force (Hc) become major interest to be investigated. An effect of the various processes [1] and designing crystal structure of the barium ferrite to magnetic properties were investigated systematically [2][3][4][5]. In order to improve the magnetic properties, the nanocrystalline BaFe 12 O 19 ferrites has potential opportunity to be developed.…”

Section: Introductionmentioning

confidence: 99%

Effect of Co-Ti Substitution on Magnetic Properties of Nanocrystalline BaFe12O19

Handoko¹

2016

KEG

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Abstractwere prepared by solid state reaction method. The crystal structure, microstructure, and magnetic properties were characterized using powder X-ray diffraction, scanning electron microscope (SEM) and permagraph meter, respectively. The results show that the nanocrystalline BaFe 12−2 Co Ti O 19 has single phase with polycrystalline structure, the grain size decrease by doping, the coercivity (Hc) and saturation magnetization (Ms) decrease with increasing Co-Ti substitutions.

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“…By applying heat treatment condition variations on barium ferrite, the structural and magnetic properties of the material can be studied [3]. Sozeri et al [4] revealed the relationship between sintering temperature and the magnetic properties of barium ferrite in pellet form. An external field was applied to investigate the structural and magnetic properties of barium ferrite that was synthesized by three different methods: oxidation in nitric acid, solid state reaction and co-precipitation.…”

Section: Introductionmentioning

confidence: 99%

Development of Magnetic B-H Hysteresis Loops Through Stages of Microstructure Evolution of Bulk BaFe12 O 19

Huang

Hashim

Ismail

et al. 2015

J Supercond Nov Magn

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A series of polycrystalline BaFe 12 O 19 bulk samples produced have been used to investigate the parallel evolving relationship between the microstructural and magnetic properties of the magnetic material. The raw material starting powders were prepared via the mechanical alloying method and subsequently moulded and pressed by using a hydraulic pressing machine. The nanosized samples were sintered from 700 to 1300 • C with 100 • C increments in static air conditions. The sintered samples were characterized and analysed with increasing sintering temperature to study their crystallinity, microstructural and magnetic properties. The result shows the magnetic B-H hysteresis loop varies with grain size, which was attributed to the increasing crystallinity and changing magnetic parameters. The microstructural properties like grain size were measured by using FeSEM, the phase analysis of the material was analysed with X-ray diffractometry (XRD) and density was determined by a densimeter, while the hysteresis loop was measured by a B-H tracer and Curie temperature was measured with an impedance analyser. The characterized samples were found to be divided into three groups which consisted of grain size varied from 0.30 to 0.39 μm (paramagnetic state), 0.46 to 0.94 μm (intermediate ferromagnetic state) and ≥ 1.78 μm (strong ferromagnetic state). For the latter two groups, slanting sigmoid hysteresis loops were observed. Well-defined sigmoid-shaped B-H hysteresis loops were obtained when high crystallinity Ismayadi Ismail was attained, allowing strong exchange interaction between neighbouring atomic magnetic moments. This indicated that the ferromagnetic state had been achieved. The observed three B-H hysteresis groups exhibited different magnetic properties, and these behaviours are useful for industrial applications.

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Effect of pelletization on magnetic properties of BaFe12O19

Cited by 43 publications

References 16 publications

The Effect of Condensation on the Morphology and Magnetic Properties of Modified Barium Hexaferrite (BaFe12O19)

The Effect of Condensation on the Morphology and Magnetic Properties of Modified Barium Hexaferrite (BaFe12O19)

Effect of Co-Ti Substitution on Magnetic Properties of Nanocrystalline BaFe12O19

Development of Magnetic B-H Hysteresis Loops Through Stages of Microstructure Evolution of Bulk BaFe12 O 19

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