Abstract
Direct magnetoelectric (ME) effect in two‐layered Tb0.12Dy0.2Fe0.68/Epoxy − PbZr0.53Ti0.47O3 composites containing magnetostrictive layers of the epoxy with distributed in it Tb0.12Dy0.2Fe0.68 granules and piezoelectric layers of the PbZr0.53Ti0.47O3 ceramics was studied. It was found, that the gradient distribution of Tb0.12Dy0.2Fe0.68 granules in magnetostrictive layers induces the internal (self‐biased) magnetic field. This field leads to the increase in ME responses in composites with the gradient distribution of Tb0.12Dy0.2Fe0.68 granules in magnetostrictive layers as compared with ME responses in composites with the random distribution of Tb0.12Dy0.2Fe0.68 granules in magnetostrictive layers, which does not induce the internal magnetic field. We revealed the possibility of controlling and determining values of the internal magnetic field in composites and conditions for obtaining optimal ME responses.
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