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KR: Fachverband Kristallographie
KR 8: Multiferroics I (Joint Session of MA, DF, KR, DS)
KR 8.6: 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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