Dresden 2017 – wissenschaftliches Programm

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DF: Fachverband Dielektrische Festkörper

DF 18: Multiferroics (DF and MA)

DF 18.4: Vortrag

Donnerstag, 23. März 2017, 15:45–16:00, WIL B321

New multiferroic materials - oxyhalides & orthotellurates — •A. C. Komarek1, L. Zhao1, H. Guo1, M. T. Fernández-Díaz2, W. Schmidt3, and L. H. Tjeng11Max-Planck Institute for Chemical Physics of Solids, Nöthnitzer Str. 40, D-01187 Dresden, Germany — 2Institut Laue-Langevin, 71 Avenue des Martyrs, F-38042 Grenoble Cedex 9, France — 3Jülich Centre for Neutron Science JCNS, Forschungszentrum Jülich GmbH, Outstation at ILL, 71 avenue des Martyrs, F-38042 Grenoble Cedex 9, France

Magnetoelectric multiferroics have attracted considerable attention in the past years due to their possible application in future devices. Especially certain spiral magnetic structures are often responsible for the cross-coupling between magnetism and ferroelectricity in these materials. So far multiferroicity has been found mainly in oxide materials. Here, we report the observation of multiferroicity in two other interesting classes of transition metal compounds: First, we found spin-induced multiferroicity with high critical temperature in a transition metal oxyhalide (Cu2OCl2 [1]), and second, we also observed multiferroic properties in a transition metal orthotellurate with a complex magnetic structure (Mn3TeO6 [1]).

References— [1] L. Zhao, M. T. Fernández-Díaz, L. H. Tjeng and A. C. Komarek, Science Advances, 2, e1600353 (2016). [2] L. Zhao, Z. Hu, C.-Y. Kuo, T.-W. Pi, M.-K. Wu, L. H. Tjeng and A. C. Komarek, Phys. Status Solidi RRL 9, 730 (2015).

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