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Fine tuning of ferromagnet/antiferromagnet interface magnetic anisotropy for field-free switching of antiferromagnetic spins

Authors :
M. Ślęzak
P. Dróżdż
W. Janus
H. Nayyef
A. Kozioł-Rachwał
M. Szpytma
M. Zając
T. O. Menteş
F. Genuzio
A. Locatelli
T. Ślęzak
Source :
Nanoscale. 12:18091-18095
Publication Year :
2020
Publisher :
Royal Society of Chemistry (RSC), 2020.

Abstract

We show that in a uniform thickness NiO(111)/Fe(110) epitaxial bilayer system, at given temperature near 300 K, two magnetic states with orthogonal spin orientations can be stabilized in antiferromagnetic NiO. Field-free, reversible switching between these two antiferromagnetic states is demonstrated. The observed phenomena arise from the unique combination of precisely tuned interface magnetic anisotropy, thermal hysteresis of spin reorientation transition and interfacial ferromagnet/antiferromagnet exchange coupling. The possibility of field-free switching between two magnetic states in an antiferromagnet is fundamentally interesting and can lead to new ideas in heat assisted magnetic recording technology.

Details

ISSN :
20403372 and 20403364
Volume :
12
Database :
OpenAIRE
Journal :
Nanoscale
Accession number :
edsair.doi.dedup.....98c9b6b4b8fc4165348a96356a5f6ede
Full Text :
https://doi.org/10.1039/d0nr04193a