Manifestation of ferroelectromagnetism in multiferroic BiMnO3 -: art. no. 103519

Multiferroic BiMnO3 with a highly distorted perovskite structure induced by the stereochemically active 6s(2) electron lone pairs of Bi3+ was synthesized at a high pressure of 6 GPa. Magnetization, differential scanning calorimetry, dielectric permittivity, and in situ powder x-ray diffraction as a function of temperature were carried out, respectively. In light of comprehensive evaluation, we can conclude that the synthetic BiMnO3 ceramic displays ferromagnetic and ferroelectric orderings simultaneously, i.e., ferroelectromagnetism below its ferromagnetic Curie temperature T-M similar to 100 K. (c) 2005 American Institute of Physics.