Mn–Zn ferrite nanoparticles for ferrofluid preparation: Study on thermal–magnetic properties

Arulmurugan, R.; Vaidyanathan, G.; Sendhilnathan, S.; Jeyadevan, Balachandran

doi:10.1016/j.jmmm.2005.03.002

Cited by 209 publications

(95 citation statements)

References 13 publications

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“…These characteristics have enabled the use of nanosized magnetic materials in biomedicine (e.g., as bioseparators), drug delivery systems, medical diagnostics, and cancer thermotherapy [5][6][7]. Due to the new applications of ferrites ways of synthesizing them, other than the ceramic method, such as the sol-gel [8,9], the precipitation [10,11], the mechanochemical [12,13], the hydrothermal [14,15], the combustion [16][17][18][19][20], and the microemulsion methods [21,22], are being widely investigated. The unquestionable advantages of the above methods are: the mixing together of the reagents at the molecular level, energy efficiency, the fact that only one process stage is required, and the absence of secondary pollution or material loss.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of manganese–zinc ferrite obtained by thermal decomposition from organic precursors

Szczygieł

Winiarska

2013

J Therm Anal Calorim

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Mn-Zn ferrites were obtained by the sol-gel autocombustion methods. The effect of the precursor used in the sol-gel autocombustion synthesis on the ferrite's microstructure was examined. The as-obtained powders were characterized by XRD, FTIR, SEM, and TG/DTA. All ferrite powders obtained from different organic precursors, after gel autocombustion, were pure spinel phase, without secondary phases. The average crystallite size, estimated from Scherrer equation, was the smallest for ferrite obtained from a mixture of fuels/precursors (citric acid and EDTA). This ferrite powder has sponge-like microstructure with large pores, but it is less agglomerated than the material obtained from glycine as the fuel.

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Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of manganese–zinc ferrite obtained by thermal decomposition from organic precursors

Szczygieł

Winiarska

2013

J Therm Anal Calorim

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“…(9) Expanding, we get wb/ m 2 magnetic field density at particle. = is a magnetic flu x density (wb/m 2 ) of a [23,24] and are governed by equation (9). (12) This , Brownian relaxat ion time is in the order of sec for 21 nm particle.…”

Section: Theoretical Analysis 51 Analysis Of Coupling Coefficientmentioning

confidence: 99%

“…Ferrofluids have attracting application in various fields like automobiles, electrical engineering [28,30,31,32], space technology, computer science, med ical imaging, bio med ical [3,4], targeted drug delivery [5,6], optical fiber [27,29] and sensors [7,8] etc. The temperature sensitivity issue on ferrofluid has already been studied [9,10]. Attempts have been made for generating energy fro m ferrofluids whereas, micro devices are used for fabrication and generation of energy.…”

Section: Introductionmentioning

confidence: 99%

Energy Conversion on Differential Magnetization of Fe3O4 Ferrofluid

Vaidya¹,

Pinjari²,

Holkar³

et al. 2017

IJERA

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Ferrofluids are stable suspension of ferrimagnetic nanoparticles in hydrocarbon carrier. This flu id is used for harvesting energy using energy conversion device which is presented in this work. The device consists of two chambers, they are hot and cold chamber in which differential magnetization is lin ked with an inductor. Classically very small value of coupling coefficient |k| has been observed. System configuration shows an emf generation rate of about 44.4µV/K. Presented work shows another way of harvesting energy. Ferrofluid havin g a particle size o f 21n m was used in this case.

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“…The effect of different rare earth ions substituted in ferrites already reported by several researchers. Rare earth ion substitution ferrites are synthesized by several physical and chemical methods such as chemical co precipitation method [6][7][8], solid state [9], hydrothermal synthesis [10], solution combustion route [11], sol-gel [12][13][14], sol-gel auto-combustion [15] microwave hydrothermal route [16,17]. However, most of all these methods are economically unfeasible.…”

Section: +mentioning

confidence: 99%

Effect of Sm3+-Gd3+ co-doping on dielectric properties of Mn-Zn ferrites synthesized via combustion route

Angadi

Rudraswamy

Sadhana

et al. 2016

Materials Today: Proceedings

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Nanocrystalline Mn 0.4 Zn 0.6 Sm x Gd y Fe 2-(x+y) O 4 where x and y = 0.01,0.02,0.03,0.04 and 0.05 were synthesized by Solution combustion method. The as prepared samples were characterized by X-ray diffractometer (XRD), Transmission electron microscopy (TEM) and Vibrating sample Magnetometer (VSM) at room temperature. From the XRD the crystallite size were found increases with the increase of Sm 3+ -Gd 3+ ions concentration while lattice parameter found to decreases. The real and imaginary part of permittivity (ε′ and ε′′) were undertaken in the wide frequency range 1GHz to 5GHz at room temperature. It is found that the real and imaginary part of permittivity's are increasing with increasing Sm 3+ and Gd 3+ concentration. The magnetic behaviour of as synthesized nano ferrites reveals that, the saturation magnetization (M S ), remanence magnetization (M R ) is increasing with increasing Sm and Gd concentration. The g-value, peak-to-peak linewidth and spin concentration evaluated from EPR spectra correlated with cations occupancy. These electromagnetic properties clearly indicates that the synthesized materials are the good candidates for L and C band frequency.

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Mn–Zn ferrite nanoparticles for ferrofluid preparation: Study on thermal–magnetic properties

Cited by 209 publications

References 13 publications

Synthesis and characterization of manganese–zinc ferrite obtained by thermal decomposition from organic precursors

Synthesis and characterization of manganese–zinc ferrite obtained by thermal decomposition from organic precursors

Energy Conversion on Differential Magnetization of Fe3O4 Ferrofluid

Effect of Sm3+-Gd3+ co-doping on dielectric properties of Mn-Zn ferrites synthesized via combustion route

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