Conference Presentation (Invited)

FZJ-2022-02869

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Contribution of charge and strain coupling in artificial multiferroic Fe3O4/PMN-PT heterostructures

SCHÖFFMANN, P. ; SARKAR, A. ; Hussein, M.FZJ* ; Bhatnagar, T. ; PÜTTER, S.FZJ* ; OHRESSER, P. ; KIRBY, B. J. ; GRUTTER, A. J. ; BARTHEL, J.FZJ* ; KENTZINGER, E.FZJ* ; STELLHORN, A. ; MÜLLER, M. ; BRÜCKEL, T.FZJ*

2022

Abstract: To be able to develop denser and faster data storage and computing solutions artificial multiferroic heterostructures are a promising approach, as they enable direct switching of magnetic states with voltage. We grow ferrimagnetic Fe3O4 thin films on ferroelectric PMN-PT substrates to study the effect of strain and polarisation induced by the substrate onto the magnetic properties of the film. We found that the coupling due to strain and charge is strongly dependent on the orientation of the sample in an external magnetic field as well as the substrate cut. We will present a simple model to explain the contribution of strain and charge for different substrate and magentic field orientations.

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Contributing Institute(s):

1. Streumethoden (JCNS-2)
2. Streumethoden (PGI-4)
3. JARA-FIT (JARA-FIT)
4. JCNS-4 (JCNS-4)
5. Materialwissenschaft u. Werkstofftechnik (ER-C-2)

Research Program(s):

1. 632 - Materials – Quantum, Complex and Functional Materials (POF4-632) (POF4-632)
2. 6G4 - Jülich Centre for Neutron Research (JCNS) (FZJ) (POF4-6G4) (POF4-6G4)

Appears in the scientific report 2022

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