Magnetic Structure and Ordering of Multiferroic Hexagonal LuFeO3
Steven M. Disseler, Julie A. Borchers, Charles M. Brooks, Julia A., Mundy, Jarrett A. Moyer, D. A. Hillsberry, E. L. Thies, D. A. Tenne, John, Heron, James D. Clarkson, Gregory M. Stiehl, Peter Schiffer, David A. Muller,, Darrell G. Schlom, and William D. Ratcliff
TL;DR
This study investigates the magnetic structure of hexagonal LuFeO3 films, revealing a transition to a canted antiferromagnetic state around 138-155 K and highlighting its potential for magnetoelectric applications.
Contribution
It provides detailed experimental insights into the magnetic ordering of LuFeO3 films and suggests their suitability for electric field control of magnetism.
Findings
Magnetic ordering occurs between 138-155 K.
The material exhibits a ferromagnetically-canted antiferromagnetic state.
Potential for linear magnetoelectric coupling.
Abstract
We report on the magnetic structure and ordering of hexagonal LuFeO3 films grown by molecular-beam epitaxy (MBE) on YSZ (111) and Al2O3 (0001) substrates. Using a set of complementary probes including neutron diffraction, we find that the system magnetically orders into a ferromagnetically-canted antiferromagnetic state via a single transition between 138-155 K, while a paraelectric to ferroelectric transition occurs above 1000 K. The symmetry of the magnetic structure in the ferroelectric state implies that this material is a strong candidate for linear magnetoelectric coupling and control of the ferromagnetic moment directly by an electric field.
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