Magnetocapacitance effect in multiferroic BiMnO 3

We have investigated the structural, magnetic, and electric properties of ferromagnetic BiMnO 3 with a highly distorted perovskite structure. At T E = 750-770 K, a centrosymmetric-to-non-centrosymmetric structural transition takes place, which describes of the ferroelectricity in the system. The changes in the dielectric constant were induced by the magnetic ordering (T M 100 K) as well as by the application of magnetic fields near T M . These features are attributed to the inherent coupling between the ferroelectric and ferromagnetic orders in the multiferroic system.

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