Scaling-Based Analysis and Modelling of Power Losses in Amorphous and Nanocrystalline Alloys

Najgebauer, Mariusz

doi:10.12693/aphyspola.131.1225

Cited by 6 publications

(4 citation statements)

References 19 publications

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“…Such results are congruent with previous literature data [44,45]. It was previously shown that the domain structure would suffer certain transformations owing to the sample size, induction amplitude, as well as other conditions and/or parameters [45][46][47][48], leading to difficulties concerning total magnetic losses separation. To recall, power losses in soft magnetic materials are generated by hysteresis phenomenon and eddy currents, flowing in different scales as in the whole material volume, around moving domain walls or micro-currents related to the Barkhausen jumps.…”

Section: Resultssupporting

confidence: 92%

Estimation of Energy Losses in Nanocrystalline FINEMET Alloys Working at High Frequency

Petrescu

Cazacu

et al. 2021

Materials

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Soft magnetic materials are at the core of electromagnetic devices. Planar transformers are essential pieces of equipment working at high frequency. Usually, their magnetic core is made of various types of ferrites or iron-based alloys. An upcoming alternative might be the replacement the ferrites with FINEMET-type alloys, of nominal composition of Fe73.5Si13.5B9Cu3Nb1 (at. %). FINEMET is a nanocrystalline material exhibiting excellent magnetic properties at high frequencies, a soft magnetic alloy that has been in the focus of interest in the last years thanks to its high saturation magnetization, high permeability, and low core loss. Here, we present and discuss the measured and modelled properties of this material. Owing to the limits of the experimental set-up, an estimate of the total magnetic losses within this magnetic material is made, for values greater than the measurement limits of the magnetic flux density and frequency, with reasonable results for potential applications of FINMET-type alloys and thin films in high frequency planar transformer cores.

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Section: Resultssupporting

confidence: 92%

Estimation of Energy Losses in Nanocrystalline FINEMET Alloys Working at High Frequency

Petrescu

Cazacu

et al. 2021

Materials

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“…Moreover, magnetic losses in these composites will be analyzed using the scaling theory. The scaling theory has been previously applied in the magnetic losses analyzed for electrical steels, amorphous and nanocrystalline ribbons as well as magnetocaloric alloys [13][14][15], which provided interesting and useful results. The losses scaling should allow us to investigate multiscale behaviour of energy dissipation in Fe-polymer composites; to find universal relations between parameters; and finally to model magnetic composites for different Fe-grain size, excitation conditions or technological parameters.…”

Section: Resultsmentioning

confidence: 99%

Analysis of magnetic losses in Fe-polymer composites

Najgebauer

Jakubas

Szczygłowski

2018

Journal of Electrical Engineering

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The most important properties of soft magnetic materials are peak induction and magnetic losses, determining the size and efficiency of electric devices. Conventional soft magnetic materials are not suitable for the construction of miniaturized magnetic cores. Soft magnetic composites meet miniaturization requirements of electric and electronic devices. In this paper, magnetic losses in self-developed Fe-polymer composites are analyzed. The frequency dependencies of magnetic losses are measured at different level of maximum induction. The influence of Fe-grain size on magnetic losses is also discussed.

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“…The scaling analysis is also used in materials science, including the study of magnetic material properties such as power loss [30][31][32][33][34], coercivity [35][36][37], magnetic viscosity [38][39][40] or hysteresis loops [41][42][43][44][45].…”

Section: Scaling Analysis Of Magnetic Anisotropymentioning

confidence: 99%

“…In the previous studies, a scaling function was usually represented by Maclaurin series [30][31][32][33][34][35][36][37].…”

Section: Scaling Analysis Of Magnetic Anisotropymentioning

confidence: 99%

Scaling-based prediction of magnetic anisotropy in grain-oriented steels

Najgebauer¹

2017

Archives of Electrical Engineering

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Abstract:The paper presents the scaling-based approach to analysis and prediction of magnetic anisotropy in grain-oriented steels. Results of the anisotropy scaling indicate the existence of two universality classes. The hybrid approach to prediction of magnetic anisotropy, combining the scaling analysis with the ODFs method, is proposed. This approach is examined in prediction of angular dependencies of magnetic induction as well as magnetization curves for the 111-35S5 steel. It is shown that it is possible to predict anisotropy of magnetic properties based on measurements in three arbitrary directions for φ = 0°, 60° and 90°. The relatively small errors between predicted and measured values of magnetic induction are obtained.

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Scaling-Based Analysis and Modelling of Power Losses in Amorphous and Nanocrystalline Alloys

Cited by 6 publications

References 19 publications

Estimation of Energy Losses in Nanocrystalline FINEMET Alloys Working at High Frequency

Estimation of Energy Losses in Nanocrystalline FINEMET Alloys Working at High Frequency

Analysis of magnetic losses in Fe-polymer composites

Scaling-based prediction of magnetic anisotropy in grain-oriented steels

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