High magnetoelectric effect at room temperature in nanograined ceramics of multiferroic-perovskites with general formula Pb(B′B′′)O3
DOI:
https://doi.org/10.15407/dopovidi2017.12.045Keywords:
magnetoelectric effect, modeling of properties, multiferroics, nanograined ceramicsAbstract
Using the Landau—Ginzburg—Devonshire approach, the theoretical modeling of the magnetoelectric effect in nanograined ceramics of multiferroic-perovskites is carried out. We consider ferromagnetic ferroelectrics Pb(Fe1/2Ta1/2)x(Zr1/2Ti1/2)1-xO3 та Pb(Fe1/2Nb1/2)x(Zr1/2Ti1/2)1-xO3, which have pronounced magneto electric properties at temperatures higher than 100 K, including the high magnetoelectric effect at room temperature. It is shown that the coefficient of magnetoelectric effect can increase by 1–3 orders due to size effects in nanoceramics.
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