Abstract
A statistical investigation of the homogenized physical properties of polycrystalline \(\hbox {BaTiO}_{3}/ \hbox {CoFe}_{2} \hbox {O}_{4}\) multiferroic composites is presented to detail the effect of how the representative volume elements for the microstructure are defined. The dependence on the number of microstructural orientations and the number of computational trials was analyzed, and the effective microstructural modeling condition was discussed based on the 95% confidence interval of the macrostructural homogenized physical constants. The computation reveals that the convergence of the homogenized physical properties is different between the diagonal and off-diagonal coupling constants. The homogenized magnetoelectric constants require more orientations and trials to achieve convergence. The influence of crystal orientation control through polarization treatment on the homogenized magnetoelectric constants was then investigated using the obtained effective microstructure model. The relation between the macrostructural homogenized physical properties and the microstructural orientations was discussed for multiferroic composites with different domain switching systems.
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Uetsuji, Y., Wada, T. & Tsuchiya, K. Statistical investigation of homogenized physical properties of polycrystalline multiferroic composites. Acta Mech 230, 1387–1401 (2019). https://doi.org/10.1007/s00707-017-2018-x
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DOI: https://doi.org/10.1007/s00707-017-2018-x