TY - JOUR
KW - Anisotropy
KW - Evolution
KW - Polarization
KW - Magnetic anisotropy
KW - Unclassified drug
KW - Electric field
KW - Article
KW - Bismuth
KW - Ferrite
KW - Thin section
KW - Bismuth ferrite
KW - Ferromagnetic material
KW - Complex terrain
KW - Calculation
KW - Chemical interaction
KW - Structure analysis
AU - Z Chen
AU - Z Chen
AU - C.-Y Kuo
AU - Y Tang
AU - L.R Dedon
AU - Q Li
AU - L Zhang
AU - C Klewe
AU - Y.-L Huang
AU - B Prasad
AU - A Farhan
AU - M Yang
AU - J.D Clarkson
AU - S Das
AU - S Manipatruni
AU - A Tanaka
AU - P Shafer
AU - E Arenholz
AU - A Scholl
AU - Y.-H Chu
AU - Z.Q Qiu
AU - Z Hu
AU - L.-H Tjeng
AU - Ramamoorthy Ramesh
AU - L.-W Wang
AU - L.W Martin
AB - Electric-field control of magnetism requires deterministic control of the magnetic order and understanding of the magnetoelectric coupling in multiferroics like BiFeO3 and EuTiO3. Despite this critical need, there are few studies on the strain evolution of magnetic order in BiFeO3 films. Here, in (110)-oriented BiFeO3 films, we reveal that while the polarization structure remains relatively unaffected, strain can continuously tune the orientation of the antiferromagnetic-spin axis across a wide angular space, resulting in an unexpected deviation of the classical perpendicular relationship between the antiferromagnetic axis and the polarization. Calculations suggest that this evolution arises from a competition between the Dzyaloshinskii–Moriya interaction and single-ion anisotropy wherein the former dominates at small strains and the two are comparable at large strains. Finally, strong coupling between the BiFeO3 and the ferromagnet Co0.9Fe0.1 exists such that the magnetic anisotropy of the ferromagnet can be effectively controlled by engineering the orientation of the antiferromagnetic-spin axis. © 2018, The Author(s).
BT - Nature Communications
DO - 10.1038/s41467-018-06190-5
LA - eng
M1 - 1
N1 - cited By 12
N2 - Electric-field control of magnetism requires deterministic control of the magnetic order and understanding of the magnetoelectric coupling in multiferroics like BiFeO3 and EuTiO3. Despite this critical need, there are few studies on the strain evolution of magnetic order in BiFeO3 films. Here, in (110)-oriented BiFeO3 films, we reveal that while the polarization structure remains relatively unaffected, strain can continuously tune the orientation of the antiferromagnetic-spin axis across a wide angular space, resulting in an unexpected deviation of the classical perpendicular relationship between the antiferromagnetic axis and the polarization. Calculations suggest that this evolution arises from a competition between the Dzyaloshinskii–Moriya interaction and single-ion anisotropy wherein the former dominates at small strains and the two are comparable at large strains. Finally, strong coupling between the BiFeO3 and the ferromagnet Co0.9Fe0.1 exists such that the magnetic anisotropy of the ferromagnet can be effectively controlled by engineering the orientation of the antiferromagnetic-spin axis. © 2018, The Author(s).
PB - Nature Publishing Group
PY - 2018
T2 - Nature Communications
TI - Complex strain evolution of polar and magnetic order in multiferroic BiFeO3 thin films
VL - 9
SN - 20411723
ER -