Regensburg 2022 – wissenschaftliches Programm

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KFM: Fachverband Kristalline Festkörper und deren Mikrostruktur

KFM 29: Multiferroics and Magnetoelectric Coupling (joint session MA/KFM)

KFM 29.1: Vortrag

Donnerstag, 8. September 2022, 15:00–15:15, H47

Fast non-volatile electrical switching of the magnetoelectric domain states in the cubic spinel Co3O4 — •Maximilian Winkler, Somnath Ghara, Korbinian Geirhos, Lilian Prodan, Vladimir Tsurkan, Stephan Krohns, and Istvan Kezsmarki — Universität Augsburg, Augsburg, Deutschland

Here, we investigate the magnetoelectric effect of Co3O4 at temperatures far below the Neel-temperature of TN = 30K. A large magnetoelectric coefficient of up to 14ps/m is achieved if the system is cooled through TN while magnetic and/or electric fields are applied. According to these poling procedures we provide a systematic analysis of how the magnetoelectric domain state can be controlled and even in situ switched by reversing the direction of either the electric or the magnetic field. The complete switching of the antiferromagnetic state is found to be faster than microseconds. Altogether, the control of the magnetoelectric domains and the fast switching dynamics makes the linear magnetoelectric coupling of Co3O4 highly interesting for spintronics.

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