Synthesis and properties of ferrite nanopowders for epoxy‐barium hexaferrite‐nanocarbon composites for microwave applications

Вовченко, Л. Л.; Matzui, L. Yu.; Brusylovets, Oleksii; Oliynyk, V. V.; Launets, V. L.; Shames, Alex; Yakovenko, O. S.; Skoryk, N.

doi:10.1002/mawe.201600487

Cited by 14 publications

(3 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Precursors Fe(NO3)3 and Ba(NO3)2 were taken in 12:1 proportions respectively. Details of synthesis BaFe12O19 powder are presented in 29 . Measurements of magnetic susceptibility in the temperature range 300-850 К as well as XRD analysis 29 have shown that obtained BaFe12O19 powder has the hexaferrite phase only.…”

Section: Methodsmentioning

confidence: 99%

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

et al. 2015

View full text Add to dashboard Cite

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.

show abstract

Section: Methodsmentioning

confidence: 99%

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

et al. 2015

View full text Add to dashboard Cite

show abstract

“…Many studies were carried out to investigate the effects of ferrite volume fraction in the composite on microwave absorption. The importance of such materials was confirmed by numerous extensive studies developing new effective microwave-absorbing ferrite/polymer composites [28][29][30].…”

Section: Introductionmentioning

confidence: 96%

Functional Magnetic Composites Based on Hexaferrites: Correlation of the Composition, Magnetic and High-Frequency Properties

et al. 2019

View full text Add to dashboard Cite

The paper describes preparation features of functional composites based on ferrites, such as “Ba(Fe1−xGax)12O19/epoxy,” and the results of studying their systems; namely, the correlation between structure, magnetic properties and electromagnetic absorption characteristics. We demonstrated the strong mutual influence of the chemical compositions of magnetic fillers (Ba(Fe1−xGax)12O19 0.01 < x < 0.1 solid solutions), and the main magnetic (coercivity, magnetization, anisotropy field and the first anisotropy constant) and microwave (resonant frequency and amplitude) characteristics of functional composites with 30 wt.% of hexaferrite. The paper presents a correlation between the chemical compositions of composites and amplitude–frequency characteristics. Increase of Ga-content from x = 0 to 0.1 in Ba(Fe1−xGax)12O19/epoxy composites leads to increase of the resonant frequency from 51 to 54 GHz and absorption amplitude from −1.5 to −10.5 dB/mm. The ability to control the electromagnetic properties in these types of composites opens great prospects for their practical applications due to high absorption efficiency, and lower cost in comparison with pure ceramics oxides.

show abstract

“…Гексаферриты М-типа имеют высо-кие значения поля магнитной кристаллографической анизотропии и способны работать в этом диапазоне. Данные материалы перспективны для разработки и создания функциональных устройств СВЧ-электроники: вентили, циркуляторы, фазовращатели, элементы антенн приемопередачи, а также эффективных поглотителей ЭМИ для обеспечения электромагнитной совместимос-ти [25][26][27][28][29][30]. Допирование или замещение гексаферрита бария различными диамагнитными ионами приводит к значительному изменению магнитных характеристик и, как следствие, к изменению рабочего диапазона частот.…”

Section: Introductionunclassified

Мессбауэровские исследования и микроволновые свойства гексаферритов бария с замещением ионами Al-=SUP=-3+-=/SUP=- и In-=SUP=-3+-=/SUP=-

Труханов¹,

Костишин²,

Коровушкин³

et al. 2018

Физика Твердого Тела

View full text Add to dashboard Cite

The correlation of the chemical composition, the structure, and the microwave characteristic of solid solutions of the BaFe_12 – x D_ x O_19 (0.1 ≤ x ≤ 1.2) barium hexaferrite substituted with diamagnetic Al^3+ and In^3+ ions has been studied. The precise data on the crystal structure have been obtained by powder neutron diffraction using a high-resolution Fourier diffractometer (Dubna, JINR). The data on the distribution of the diamagnetic substituting ions in the hexaferrite structure have been obtained by Mössbauer spectroscopy. The microwave properties (the transmittance and the reflectance) have been studied in the frequency range 20–65 GHz and in external magnetic fields to 8 kOe. It is found that the transmission spectra are characterized by a peak that corresponds to the resonant frequency of the electromagnetic energy absorption, which is due to the ferromagnetic resonance phenomenon. The correlation of the chemical composition, the features of the ion distribution in the structure, and the electromagnetic properties has been revealed. It is shown that external magnetic fields shift the absorption peak of electromagnetic radiation to higher frequencies due to an increase in the magnetocrystal anisotropy. The results enable the conclusion that the features of the intrasublattice interactions and the electromagnetic properties should be explained using the phenomenological Goodenough–Kanamori model.

show abstract

Synthesis and properties of ferrite nanopowders for epoxy‐barium hexaferrite‐nanocarbon composites for microwave applications

Cited by 14 publications

References 19 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

Functional Magnetic Composites Based on Hexaferrites: Correlation of the Composition, Magnetic and High-Frequency Properties

Мессбауэровские исследования и микроволновые свойства гексаферритов бария с замещением ионами Al-=SUP=-3+-=/SUP=- и In-=SUP=-3+-=/SUP=-

Contact Info

Product

Resources

About