Reversible Control of Interfacial Magnetism through Ionic-Liquid-Assisted Polarization Switching.
The ability to control magnetism of materials via electric field enables a myriad of technological innovations in information storage, sensing, and computing. We use ionic-liquid-assisted ferroelectric switching to demonstrate reversible modulation of interfacial magnetism in a multiferroic heterostructure composed of ferromagnetic (FM) La0.8Sr0.2MnO3and ferroelectric (FE) PbZr0.2Ti0.8O3. It is shown that ionic liquids can be used to persistently and reversibly switch a large area of a FE film. This is a prerequisite for polarized neutron reflectometry (PNR) studies that are conducted to directly probe magnetoelectric coupling of the FE polarization to the interfacial magnetization.
Materials Science and Technology Division, ‡Quantum Condensed Matter Division, and §Chemical Sciences Division, Oak Ridge National Laboratory , Oak Ridge, Tennessee 37831, United States.
Andreas
0000-0002-1545-131X
A
Herklotz
Materials Science and Technology Division, ‡Quantum Condensed Matter Division, and §Chemical Sciences Division, Oak Ridge National Laboratory , Oak Ridge, Tennessee 37831, United States.
Er-Jia
EJ
Guo
Materials Science and Technology Division, ‡Quantum Condensed Matter Division, and §Chemical Sciences Division, Oak Ridge National Laboratory , Oak Ridge, Tennessee 37831, United States.
Anthony T
AT
Wong
Materials Science and Technology Division, ‡Quantum Condensed Matter Division, and §Chemical Sciences Division, Oak Ridge National Laboratory , Oak Ridge, Tennessee 37831, United States.
Tricia L
TL
Meyer
Materials Science and Technology Division, ‡Quantum Condensed Matter Division, and §Chemical Sciences Division, Oak Ridge National Laboratory , Oak Ridge, Tennessee 37831, United States.
Sheng
0000-0002-8046-3931
S
Dai
Materials Science and Technology Division, ‡Quantum Condensed Matter Division, and §Chemical Sciences Division, Oak Ridge National Laboratory , Oak Ridge, Tennessee 37831, United States.
T Zac
TZ
Ward
Materials Science and Technology Division, ‡Quantum Condensed Matter Division, and §Chemical Sciences Division, Oak Ridge National Laboratory , Oak Ridge, Tennessee 37831, United States.
Ho Nyung
HN
Lee
Materials Science and Technology Division, ‡Quantum Condensed Matter Division, and §Chemical Sciences Division, Oak Ridge National Laboratory , Oak Ridge, Tennessee 37831, United States.
Michael R
MR
Fitzsimmons
Magnetoelectric coupling; ferroelectric field effect; ionic liquid gating; polarized neutron reflectometry; strongly correlated oxide