Magnetoelectric coupling driven by inverse magnetostriction in multiferroic BiMn3Mn4O12 (original) (raw)

Theory of magnetoelectric effect in multilayer nanocomposites on a substrate: Static bending-mode response AIP Advances 3, 022103 Magnetodielectric effect and electric-induced magnetic permeability in magnetoelectric laminate composite under low inspiring signal J. Appl. Phys. 113, 043907 (2013) Ferroelectric/ferromagnetic ceramic composite and its hybrid permittivity stemming from hopping charge and conductivity inhomogeneity J. Appl. Phys. 113, 044101 (2013) Resonance mixing of alternating current magnetic fields in a multiferroic composite J. Appl. Phys. 113, 033902 Improved dielectric and magnetic properties of Ti modified BiCaFeO3 multiferroic ceramics Inserting both polar A and magnetic B ions in a same crystalline phase, such as A ¼ Bi 3þ , B ¼ Fe 3þ or Mn 3þ in simple perovskites ABO 3 , has been successful in achieving multiferroic properties with large ferroelectric and magnetic orders. However, modest magnetoelectric couplings have been hitherto reported, thus preventing any application for future electronics. By means of neutron diffraction, we found a large uniform C-type modulation of an E-type antiferromagnetic structure of the Mn 3þ ions in the quadruple perovskite BiMn 3 Mn 4 O 12 . A symmetry analysis indicates that this modulation is induced by the internal strain created by the polar Bi 3þ ion, which gives evidence of a large magnetoelectric coupling driven by inverse magnetostriction. This modulation is indeed absent in the isomorphic and isovalent compound LaMn 3 Mn 4 O 12 containing the nonpolar La 3þ ion. Our analysis indicates that this coupling mechanism is effective owing to the symmetrylimited structural distortions and inhomogeneities characteristic of the quadruple perovskite structure, thus preventing the release of the strain. We conclude that internal strain is a key control parameter to achieve large magnetoelectric couplings in proper ferroelectrics. V C 2013 American Institute of Physics. [http://dx.