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Comparison of experimental data and FEM simulation for a multiferroic nanocomposite
Author(s) -
Lemke Veronica,
Webers Samira,
Labusch Matthias,
Schröder Jörg,
Wende Heiko
Publication year - 2018
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201800313
Subject(s) - nanopillar , materials science , ferroelectricity , magnetization , multiferroics , condensed matter physics , barium titanate , ferrimagnetism , nanocomposite , finite element method , ferrite (magnet) , electric field , dielectric , composite material , ceramic , magnetic field , nanotechnology , optoelectronics , physics , thermodynamics , quantum mechanics , nanostructure
The combination of ferromagnetic and ferroelectric materials, so‐called multiferroic composites, increases the opportunities for technical sensors and data storage devices, see [1]. The magnetic and electric constituents have the property to affect each other e.g. an applied electric field modifies the magnetization of the magnetic phase. In nature also single‐phase materials exist with magneto‐electric properties. Though, the interoperation of the magnetization and the polarization is exclusively activated at very low temperature. Therefore, they are not favorable for most of the known technical applications. Considering this, the magneto‐electric (ME) composites can be seen as a good option since their synergy of the magneto‐electric properties is active at room temperature [2] and can be differentiated in two different effects, the direct and the converse ME effect. We will focus on (1‐3) nanocomposite grounded on the experiments made in [3] and [4]. In the experiments, cobalt ferrite nanopillars, embedded in a barium titanate matrix, are characterized. Then, for the numerical FEM‐simulations the material coefficients from [5] and [6] are taken. The change of the strain‐induced in‐plane polarizations of the ferroelectric matrix around one cobalt ferrite nanopillar is calculated. These computed results are compared to the ones of the experimental measurement outcomes.