Product properties of a two-phase magneto-electric composite: Synthesis and numerical modeling

Labusch, Matthias; Etier, Morad; Schröder, Jörg; Keip, Marc‐André

doi:10.1007/s00466-014-1031-3

Cited by 39 publications

(18 citation statements)

References 41 publications

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“…We employ the so-called FE 2 methodology [3,[8][9][10], implemented for the coupled magneto-elasto-static system of equations [11]. In the following, we denote a macroscopic quantity with an overline {•}.…”

Section: Theoretical Frameworkmentioning

confidence: 99%

A multiscale view on shape effects in the computational characterization of magnetorheological elastomers

Rambausek

Keip

Miehé

2016

Proc Appl Math and Mech

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Section: Theoretical Frameworkmentioning

confidence: 99%

A multiscale view on shape effects in the computational characterization of magnetorheological elastomers

Rambausek

Keip

Miehé

2016

Proc Appl Math and Mech

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“…Thus, the indirect path through the left bottom corner in Figure 1 must be taken. In simple cases like 2-2-connectivity, this can be straight forwardly dealt with in modeling [121] (see Appendix), for the 0-3-case it becomes a highly difficult task [51,55,[132][133][134]. Irrespective of these modeling limitations, experiment can always define an effective coupling coefficient of the sample/device.…”

Section: Compositesmentioning

confidence: 99%

“…For 0-3-or 3-3-configurations the determination of c * mnkl becomes a formidable task. In this case, α is typically calculated directly from some finite element structure [55]. It has also been effective to embed the magnetostrictive and piezoelectric materials in an insulating polymer matrix for achieving converging models [51,132].…”

Section: Product Propertiesmentioning

confidence: 99%

“…A wealth of experimental www.gamm-mitteilungen.org examples exists due to the many possible material combinations [8,[48][49][50]. Modeling 1-3-composites is also well feasible, if the microstructure is periodic [40,[51][52][53][54][55]. Microstructures with statistical distribution of grains in space (a plane) require much larger parts of the microstructure to be modeled, because the arbitrary distribution of grains necessitates a larger "modeling cell" which starts to be a real challenge.…”

Section: Compositesmentioning

confidence: 99%

“…Lead zirconate titanate/Ni-Ferrite [61][62][63] yields another possible combination. Different modeling approaches have been taken [55,64,65].…”

Section: Compositesmentioning

confidence: 99%

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Measuring the magnetoelectric effect across scales

et al. 2015

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Magnetoelectric coupling is the material based coupling between electric and magnetic fields without recurrence to electrodynamics. It can arise in intrinsic multiferroics as well as in composites. Intrinsic multiferroics rely on atomistic coupling mechanisms, or coupled crystallographic order parameters, and even more complex mechanisms. They typically require operating temperatures much below T = 0°C in order to exhibit their coupling effects. Room temperature applications are thus excluded. Consequently, composites have been designed to circumvent this limitation. They rely on field coupling between magnetostrictive and piezoelectric materials or in more advanced scenarios on quantum coupling in between both phases.This overview will describe experimental techniques and their particular limitations in accessing these coupling phenomena at different scales. Strain coupling is the dominant coupling mechanism at the macroscale as well as down to the micrometer. At the nanoscale more subtle effects can arise and some care has to be taken when investigating local coupling at interfaces using scanning probe techniques, e. g. due to semiconductor effects, field screening, or gradient and surface effects. At the smallest length scale atomic or molecular coupling can be tested using X‐ray dichroism or probe atoms like 57Fe in Mössbauer spectroscopy. We display a selection of measuring techniques at the different scales and outline possible pitfalls for experimentalists as well as theoreticians when using material parameters extracted from such experimental work. (© 2015 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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Computation of non‐linear magneto‐electric product properties of 0–3 composites

et al. 2015

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The magneto‐electric (ME) coupling of multiferroic materials is of high interest for a variety of advanced applications like in data storage or sensor technology. Since the ME coupling of single‐phase multiferroics is too low for technical applications, the manufacturing of composite structures becomes relevant. These composites generate the effective ME coupling as a strain‐induced product property. Several experiments on composite multiferroics showed remarkable ME coefficients that are orders of magnitudes higher than those of single‐phase materials. The present paper investigates the arising effective product properties of two‐phase ME composites by simulating the coupling behavior using a two‐scale finite element (FE2) homogenization approach. By means of this method, microstructures with different volume fractions of the individual phases and associated macroscopic ME coupling coefficients are considered. We investigate the influence of different magnetization states by means of the non‐linear dissipative magnetostriction material model originally established in [1]. (© 2015 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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Product properties of a two-phase magneto-electric composite: Synthesis and numerical modeling

Cited by 39 publications

References 41 publications

A multiscale view on shape effects in the computational characterization of magnetorheological elastomers

A multiscale view on shape effects in the computational characterization of magnetorheological elastomers

Measuring the magnetoelectric effect across scales

Computation of non‐linear magneto‐electric product properties of 0–3 composites

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