Regensburg 2010 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 10: Poster I

MA 10.21: Poster

Dienstag, 23. März 2010, 10:45–13:45, Poster A

Magnetic Structure of Multiferroic DyMnO₃ studied by Resonant Soft X-ray Scattering — •Enrico Schierle, Victor Soltwisch, Detlef Schmitz, Ralf Feyerherm, Andrey Maljuk, Fabiano Yokaichiya, Dimitri Argyriou, and Eugen Weschke — Helmholtz-Zentrum Berlin

In multiferroic DyMnO₃, ferroelectricity is induced by a cycloidal magnetic structure of Mn-3d moments. However, it has been shown that ordering of Dy-4f moments strongly influences the ferroelectric properties of this compound. We examined the magnetic structure of Dy-4f moments by resonant magnetic X-ray scattering (RMXS) at the Dy-M₅ resonance in detail. As the main result, we show that over a large temperature range of the ferroelectric phase, Dy-4f moments form a magnetic cycloid of a chirality coupled to the direction of the electric polarization. This property can be exploited to map the ferroelectric domain structure at the crystal surface by RMXS.

This document was translated from L^AT_EX by H^EV^EA.