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Regensburg 2010 – scientific programme

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MA: Fachverband Magnetismus

MA 3: Multiferroics I (with DF, KR, DS)

MA 3.6: Talk

Monday, March 22, 2010, 11:45–12:00, H3

Manipulating ferroelectric domains of multiferroic DyMnO3 by soft X-rays — •Victor Soltwisch, Enrico Schierle, Detlef Schmitz, Dimitri Argyriou, Fabiano Yokaichiya, Ralf Feyerherm, and Eugen Weschke — Helmholtz Zentrum Berlin

In multiferroic DyMnO3, ferroelectricity is induced by cycloidal magnetic structures of a chirality coupled to the direction of the electric polarization. XRMS at the Dy-M5 resonance allows to distinguish surface regions of different chirality of the Dy-4f magnetic cycloid and, hence, can be used to image ferroelectric domains. Furthermore, the x-ray beam itself can be utilized to manipulate the distribution of domains at the crystal surface.


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