Conference Presentation (Invited)

FZJ-2020-01045

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Polarized neutron reflectometry of magneto-electric coupling in FeO4/PMN-PT(0) artificial multiferroic heterostructures

SCHÖFFMANN, P.FZJ* ; SARKAR, A.FZJ* ; BHATNAGAR, T.FZJ* ; Hussein, M.FZJ* ; GEPRÄGS, S. ; KENTZINGER, E.FZJ* ; STELLHORN, A.FZJ* ; KIRBY, B. ; GRUTTER, A. ; PÜTTER, S.FZJ* ; MÜLLER, M.FZJ* ; BRÜCKEL, T.FZJ*

2020

Abstract: Magnetoelectric coupling phenomena in artificial thin film heterostructures have attracted attention because of the rich application possibilities in data storage and novel devices. Growing a ferrimagnetic Fe3O4 thin film on a ferroelectric [Pb(Mg1/3Nb2/3)O3]0.7-[PbTiO3]0.3 (PMN-PT) substrate in (011) orientation constitutes a heterostructure that allows for control of magnetic properties via an applied out-of-plane voltage. Using SQUID magnetometry and polarised neutron reflectometry, a clear change in magnetisation strength and orientation through the sample depth can be observed, upon the application of voltage. The effects are different along the in-plane axes (100) and (011).

---

Contributing Institute(s):

1. Streumethoden (JCNS-2)
2. Streumethoden (PGI-4)
3. JARA-FIT (JARA-FIT)
4. Elektronische Eigenschaften (PGI-6)
5. JCNS-FRM-II (JCNS-FRM-II)

Research Program(s):

1. 144 - Controlling Collective States (POF3-144) (POF3-144)
2. 524 - Controlling Collective States (POF3-524) (POF3-524)
3. 6212 - Quantum Condensed Matter: Magnetism, Superconductivity (POF3-621) (POF3-621)
4. 6213 - Materials and Processes for Energy and Transport Technologies (POF3-621) (POF3-621)
5. 6G4 - Jülich Centre for Neutron Research (JCNS) (POF3-623) (POF3-623)

Appears in the scientific report 2020

---