Ferroelectric charge order stabilized by antiferromagnetism in multiferroic LuFe(2)O(4)
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Date
2011-10-03
Journal Title
Journal ISSN
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Publisher
American Physical Society
Abstract
Neutron diffraction measurements on multiferroic LuFe(2)O(4) show changes in the antiferromagnetic (AFM) structure characterized by wave vector q = (1/3 1/3 1/2) as a function of electric field cooling procedures. The increase of intensity from all magnetic domains and the decrease in the two-dimensional (2D) magnetic order observed below the Neel temperature are indicative of increased ferroelectric charge order (CO). The AFM order changes the dynamics of the CO state, and stabilizes it. It is determined that the increase in electric polarization observed at the magnetic ordering temperature is due to a transition from paramagnetic 2D charge order to AFM three-dimensional charge order.© 2011, American Physical Society
Description
Keywords
Neutron diffraction, Antiferromagnetism, Neel temperature, Polarization, Vectors, Ferroelectric materials
Citation
Mulders, A.M., Bartkowiak, M., Hester, J.R., Pomjakushina, E., Conder, K. (2011). Ferroelectric charge order stabilized by antiferromagnetism in multiferroic LuFe(2)O(4). Physical Review B, 84(14), 140403. doi:10.1103/PhysRevB.84.140403