Electronic, dielectric and magnetic properties in exotic dielectrics, RFe2O4 (R: rare-earth metal ion), are investigated. By analyzing the effective Hamiltonian for Fe 3d electrons, spin and charge correlation functions and electric polarization are calculated by the Monte-Carlo technique. Electric polarization is strongly reinforced below magnetic ordering temperature and is controlled by applying magnetic field. Observed unique magneto-dielectric phenomena are attributed to frustration in a spin-charge coupled system.
|ジャーナル||Journal of Physics: Conference Series|
|出版ステータス||Published - 2009 1月 1|
|イベント||4th International Conference on Highly Frustrated Magnetism 2008, HFM 2008 - Braunschweig, Germany|
継続期間: 2008 9月 7 → 2008 9月 12
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