Defects level evaluation of LiTiZn ferrite ceramics using temperature dependence of initial permeability

Малышев, А. В.; Petrova, A.B.; Sokolovskiy, Alexey; Суржиков, А. П.

doi:10.1016/j.jmmm.2018.02.032

Cited by 13 publications

(9 citation statements)

References 16 publications

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“…Suspension of a Bi2O3 solution in concentrated nitric acid of 0.22 wt. % was added and was mixed in a ball mill for 4 hours [24].…”

Section: Methodsmentioning

confidence: 99%

“…The parameters of the magnetic hysteresis loop were measured using an oscillographic circuit (based on a Tektronix-2012B two-channel oscilloscope) [24].…”

Section: Characterization Techniquesmentioning

confidence: 99%

“…Earlier, we proposed a method for assessing the defect structure based on the temperature dependence of the initial permeability µi. This method has shown its relatively high sensitivity in comparison with the known magnetic control methods, as well as XRD [24].…”

Section: Introductionmentioning

confidence: 99%

“…Measurements of the structure-sensitive parameter µi in a wide temperature range, including the Curie point, at which the magnetic domains are destroyed, make it possible to track changes in the defect structure in ferrite ceramics by changing the shape of the curve. The defect structure was calculated for each temperature curve as a result of mathematical processing using a phenomenological expression [24]. Using model samples doped with the Al2O3, it was shown that this diamagnetic addition significantly affects the shape of the temperature curve µi.…”

Section: Introductionmentioning

confidence: 99%

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Impact of ZrO2 additive on the microstructure, magnetic properties, and temperature dependence of the initial permeability of LiTiZn ferrite ceramics

Малышев

Petrova

Суржиков

2021

J Mater Sci: Mater Electron

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The effect of the diamagnetic ZrO2 addition on the microstructure and magnetic properties of LiTiZn ferrite ceramics, including the shape and parameters of the temperature dependence of the initial permeability, has been investigated. The defect structure of ferrite ceramic samples is assessed according to our earlier proposed method based on mathematical treatment of the experimental temperature dependencies of the initial permeability. The method is recommended for defects monitoring of soft ferrite ceramics and ferrite products. It was found that the defect structure of ferrite ceramics increased by 350% with an increase in the concentration of the ZrO2 additive in the range of (0-0.5) wt.%. In this case, for the same samples, the increase in the true physical broadening of reflections is only 20%, and the coercive force by 50%. Simultaneously, the maximum of the experimental temperature dependence of the initial permeability dropped by 45%.The microstructure of all samples is characterized with a similar average grain size according to the SEM data. However, samples with the 0.5wt.% of ZrO2 are characterized by the formation of conglomerates. A linear relationship was obtained between the defect structure and the width of the reflections, which indicates that this parameter is related to the elastic stress of ferrite ceramics.

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“…Suspension of a Bi2O3 solution in concentrated nitric acid of 0.22 wt. % was added and was mixed in a ball mill for 4 hours [24].…”

Section: Methodsmentioning

confidence: 99%

“…The parameters of the magnetic hysteresis loop were measured using an oscillographic circuit (based on a Tektronix-2012B two-channel oscilloscope) [24].…”

Section: Characterization Techniquesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Impact of ZrO2 additive on the microstructure, magnetic properties, and temperature dependence of the initial permeability of LiTiZn ferrite ceramics

Малышев

Petrova

Суржиков

2021

J Mater Sci: Mater Electron

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“…Ferrite is a very important class of magnetic materials from the application point of view and is extensively used as permanent magnets in market because of their low price and high magnetic performance [1]. The physical properties of ferrite are related to the structure of solid.…”

Section: Introductionmentioning

confidence: 99%

Analysis of grain growth, structural and magnetic properties of Li-Ni-Zn ferrite under the influence of sintering temperature

Islam

Rahaman

Hasan

et al. 2019

Heliyon

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The effect of sintering temperature (T S ) on the structural and magnetic properties of Li 0.15 Ni 0.3 Zn 0.4 Fe 2.15 O 4 is investigated and discussed. The sample is synthesized by the sol-gel auto combustion method and sintered at 1373–1573 K for 5 h. Phase identification of the powder sample was performed by using the X-ray diffraction (XRD). The XRD patterns confirmed the formation of single phase cubic spinel structure. The bulk density is correlated with T S . From the energy-dispersive X-ray spectroscopy study, it is observed that the percentage of the elements in the component phases is well consistent with the nominal composition of the composites. Field Emission Scanning Electron Microscopy showed that the average grain size (D) is increased with increasing T S . The frequency (100 Hz–120 MHz) dependent complex initial permeability spectra and relative quality factor increased with sintering temperature up to 1523 K then decreased for further increase in temperature. The complex initial permeability has been explained with the help of microstructure, and the redistribution of cations in their sites.

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Effect of ball milling on defects level, Curie point and microstructure of LiTiZn ferrite ceramics

Малышев

Vlasov

Petrova

et al. 2019

J Therm Anal Calorim

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Defects level evaluation of LiTiZn ferrite ceramics using temperature dependence of initial permeability

Cited by 13 publications

References 16 publications

Impact of ZrO2 additive on the microstructure, magnetic properties, and temperature dependence of the initial permeability of LiTiZn ferrite ceramics

Impact of ZrO2 additive on the microstructure, magnetic properties, and temperature dependence of the initial permeability of LiTiZn ferrite ceramics

Analysis of grain growth, structural and magnetic properties of Li-Ni-Zn ferrite under the influence of sintering temperature

Effect of ball milling on defects level, Curie point and microstructure of LiTiZn ferrite ceramics

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