Modelling Hysteresis Loops in Fe-Based Soft Magnetic Composites Using Takács Description

Jankowski, B.; Ślusarek, B.; Szczygłowski, J.; Chwastek, Krzysztof

doi:10.12693/aphyspola.128.116

Cited by 6 publications

(1 citation statement)

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“…Composite materials are usually isotropic; therefore, computational techniques and models developed for isotropic media are appropriate (Benabou et al , 2004; Gilbert et al , 2004; Guérin et al , 2016; Henrotte et al , 2006; Jakubas et al , 2017; Jankowski et al , 2015; Ślusarek et al , 2015a, 2015b, Zidarič et al , 2006; Zidarič and Miljavec, 2011). Among different descriptions of hysteresis in SMC cores, the following models have attracted much attention of researchers: the phenomenological T(x) model (Jankowski et al , 2015, Ślusarek et al , 2015a, 2015b), the Jiles–Atherton (JA) approach and its modifications (Benabou et al , 2004; Clénet et al , 2000, Zidarič et al , 2006; Ślusarek et al , 2015a), the Schneider description (Birčaková et al , 2017) and the Preisach model (Benabou et al , 2004, 2008). In the present paper, we focus on a low-dimensional description, developed by the Brazilian research group GRUCAD (Koltermann et al , 2000, 2002).…”

Section: Introductionmentioning

confidence: 99%

Modelling the effect of compaction pressure on hysteresis curves of self-developed SMC cores

Jakubas

Jastrzębski

Chwastek

2019

COMPEL

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Purpose The purpose of this paper is to examine the effect of varying compaction pressure on magnetic properties of self-developed soft magnetic composite (SMC) cores. The change in shape of ferromagnetic hysteresis curves has – in turn – the impact on the values of hysteresis model parameters. The phenomenological GRUCAD model is chosen for description of hysteresis curves. Design/methodology/approach Several cylinder-shaped cores have been made from a mixture of iron powder and suspense polyvinyl chloride using a hydraulic press with a form and a band with a thermocouple for controlling heat treatment conditions. The only varying parameter in the study is the compaction pressure. The magnetic properties of developed cores have been measured using a computer-acquisition card and LabView software. The obtained hysteresis curves are fitted to the equations of the phenomenological GRUCAD model. This description is compliant with the laws of irreversible thermodynamics. The variations of model parameters are presented as functions of compacting pressure. Findings The compaction pressure has a significant impact on magnetic properties of self-developed SMC cores. The paper provides a number of charts useful for checking how the parameters of the hysteresis model are affected. Research limitations/implications The present paper is limited to modelling symmetrical loops only. Description of more complex magnetization cycles is postponed to another, forthcoming paper. Practical implications The GRUCAD hysteresis model may be a useful tool for the designers of magnetic circuits. Its parameters depend on the processing conditions (in this study – the compaction pressure) of the SMC cores. Originality/value Modelling of magnetic properties of SMC cores has been carried so far using some well-known description like Preisach, Takács and Jiles–Atherton proposals. The GRUCAD model has a number of advantages, and it may be a useful alternative to the latter formalism. So far it has been used for description of hysteresis curves in conventional materials like non-oriented and grain-oriented electrical steels. In the present work, it is applied to novel SMC materials.

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Section: Introductionmentioning

confidence: 99%

Modelling the effect of compaction pressure on hysteresis curves of self-developed SMC cores

Jakubas

Jastrzębski

Chwastek

2019

COMPEL

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Structural and magnetic properties of flaky FeSiB/Al2O3 soft magnetic composites with orientation of a magnetic field

Zhang¹,

Chang²,

Peng³

et al. 2022

Journal of Materials Research and Technology

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Micromagnetic study of soft magnetic nanowires

et al. 2019

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In this paper, micromagnetic analysis of an array of long magnetic nanowires (NWs) embedded in a nonmagnetic matrix is performed. It is found that for NWs with diameters on the order of a hundred nanometers, the anisotropy and exchange energies are negligible, so the total free energy is a sum of the Zeeman and magnetostatic energies. The minimum magnetostatic energy corresponds to the maximum Zeeman energy, whereby half of the NWs are magnetized parallel to the external field, while the rest of the NWs are magnetized antiparallel to the external fields. The study shows a vortex behavior of the magnetic moments in the magnetization reversal process. Additionally, the hysteresis loop area of the nanocomposite is inversely proportional to the NW diameter in the range from 20 to 200 nm. The results pave the way for designing of NW-based devices such as optimized magnetic sensors for biomedical applications with a trade-off between miniaturization and energy loss.

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Modelling Hysteresis Loops in Fe-Based Soft Magnetic Composites Using Takács Description

Cited by 6 publications

References 15 publications

Modelling the effect of compaction pressure on hysteresis curves of self-developed SMC cores

Modelling the effect of compaction pressure on hysteresis curves of self-developed SMC cores

Structural and magnetic properties of flaky FeSiB/Al2O3 soft magnetic composites with orientation of a magnetic field

Micromagnetic study of soft magnetic nanowires

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