Berlin 2012 – scientific programme
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KR: Fachgruppe Kristallographie
KR 3: Joint Session "Multiferroics II - Hexagonal Manganites / Incommensurate Multiferroics" (MA jointly with DF, DS, KR, TT)
KR 3.12: Talk
Monday, March 26, 2012, 18:15–18:30, EB 301
Resonant Elastic X-ray Scattering Studies of Multiferroic NdFe3(BO3)4 — •Sven Partzsch1, Jorge Enrique Hamann-Borrero1, Claudio Mazzoli2, A. Vasiliev3, L. Bezmaternikh4, Bernd Büchner1, and Jochen Geck1 — 1IFW, Dresden, Germany — 2ESRF, Grenoble, France — 3Moscow State University, Moscow, Russia — 4L. V. Kirensky Institute of Physics, Russian Academy of Sciences, Krasnoyarsk, Russia
Multiferroic NdFe3(BO3)4 exhibits a strong magnetoelectric coupling, since at 2K the electric polarization raises rapidly to 400 µC/m2 upon increasing the applied magnetic field to 2T [1]. We study this coupling by resonant x-ray scattering at the Nd L- and Fe K edges as a function of temperature and applied magnetic field. Employing full polarization control, the field dependence of the different magnetic phases has been characterized at the Nd L2 edge. We find that the commensurate phase at 20K and no magnetic field is different from the commensurate phase induced by the magnetic field at 2K [2].
[1] A. Zvezdin et al., JMMM, 300, 224 (2006)
[2] J. E. Hamann-Borrero et al., Phys. Rev. B, 82, 094411 (2010)