Oxide electronics

Research group

Research theme

Sub department

About

Electrical switching of magnetic polarity in a multiferroic BiFeO3 device at room temperature

Physical Review Applied American Physical Society 8:1 (2017) 014033

Authors:

Noah Waterfield Price, RD Johnson, W Saenrang, A Bombardi, FP Chmiel, CB Eom, PG Radaelli

Abstract:

We have directly imaged reversible electrical switching of the cycloidal rotation direction (magnetic polarity) in a (111)pc-BiFeO3 epitaxial-film device at room temperature by non-resonant x-ray magnetic scattering. Consistent with previous reports, fully relaxed (111)pc-BiFeO3 epitaxial films consisting of a single ferroelectric domain were found to comprise a sub-micron-scale mosaic of magneto-elastic domains, all sharing a common direction of the magnetic polarity, which was found to switch reversibly upon reversal of the ferroelectric polarization without any measurable change of the magneto-elastic domain population. A real-space polarimetry map of our device clearly distinguished between regions of the sample electrically addressed into the two magnetic states with a resolution of a few tens of micron. Contrary to the general belief that the magneto-electric coupling in BiFeO3 is weak, we find that electrical switching has a dramatic effect on the magnetic structure, with the magnetic moments rotating on average by 90 degrees at every cycle.

More details from the publisher
Details from ORA
More details
Details from ArXiV

Ab initio calculation of spin fluctuation spectra using time dependent density functional perturbation theory, planewaves, and pseudopotentials

(2017)

Authors:

Kun Cao, Henry Lambert, Paolo G Radaelli, Feliciano Giustino
More details from the publisher

Universal magneto-orbital ordering in the divalent $A$-site quadruple perovskite manganites $A$Mn$_7$O$_{12}$ ($A$ = Ca, Sr, Cd, and Pb)

(2017)

Authors:

RD Johnson, DD Khalyavin, P Manuel, PG Radaelli, IS Glazkova, N Terada, AA Belik
More details from the publisher

Electrical switching of magnetic polarity in a multiferroic BiFeO3 device at room temperature

(2017)

Authors:

N Waterfield Price, RD Johnson, W Saenrang, A Bombardi, FP Chmiel, CB Eom, PG Radaelli
More details from the publisher

Magneto-orbital ordering in the divalent A-site quadruple perovskite manganites AMn7O12 (A = Sr, Cd, and Pb): data archive

University of Oxford (2017)

Authors:

Roger Johnson, Paolo Radaelli, Dimitry Khalyavin, Pascal Manuel, IS Glazkova, Noriki Terada, Alexei Belik

Abstract:

This dataset contains plain text files of data plotted in the respective publication, archived in accordance with the EPSRC policy framework on research data. Full details of data collection and analysis are given in the publication.
More details from the publisher
Details from ORA