Dresden 2011 – wissenschaftliches Programm
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KR: Fachgruppe Kristallographie
KR 4: Multiferroics IV (Joint Session of MA, DF, DS, KR, TT)
KR 4.1: Vortrag
Dienstag, 15. März 2011, 10:45–11:00, HSZ 04
Polarization and magnetization dynamics of a field-driven multiferroic structure — •Alexander Sukhov1, Chenglong Jia1, Paul P. Horley2, and Jamal Berakdar1 — 1Institut für Physik, Martin-Luther-Universität Halle-Wittenberg, D-06120 Halle/Saale, Germany — 2Centro de Investigation en Materiales Avanzados, S.C. (CIMAV), 31109 Chihuahua, Mexico
A multiferroic chain with a linear magnetoelectric coupling induced by electrostatic screening at the ferroelectric/ferromagnet interface [1] is considered. We study theoretically the dynamic ferroelectric and magnetic response to external magnetic and electric fields by utilizing an approach based on coupled Landau-Khalatnikov and finite-temperature Landau-Lifshitz-Gilbert equations. Additionally, we make comparisons with Monte Carlo calculations. It is demonstrated [2] that for material parameters corresponding to BaTiO3/Fe the polarization and the magnetization are controllable by oscillating external magnetic and electric fields, respectively.
T. Cai, S. Ju, J. Lee, N. Sai, A.A. Demkow, Q. Niu, Z. Li, J. Shi and E. Wang, Phys. Rev. B 80, 140415(R) (2009).
[2] A. Sukhov, C.L. Jia, P.P. Horley and J. Berakdar, J. Phys.: Condens. Matter 22, 352201 (2010).