TY - JOUR
KW - Nanostructured materials
KW - Hysteresis
KW - Heterostructures
KW - Domain walls
KW - Ferroelectric materials
KW - Multiferroic
KW - Exchange bias
KW - Ferroelectricity
KW - Ferroelectric domains
KW - X-ray crystallography
KW - Dichroism
KW - Coercive force
KW - Cobalt
KW - Magnetic domains
KW - Semiconducting bismuth compounds
KW - Domain structures
KW - Nanoscale controls
KW - Piezoresponse force microscopies
KW - Magnetic thin films
KW - Crystals
KW - Coercive fields
KW - Exchange enhancements
KW - Large shifts
KW - Nanoscale
KW - X-ray magnetic circular dichroisms
AU - L.W Martin
AU - Y.-H Chu
AU - M.B Holcomb
AU - M Huijben
AU - P Yu
AU - S.-J Han
AU - D Lee
AU - S.X Wang
AU - Ramamoorthy Ramesh
AB - We demonstrate a direct correlation between the domain structure of multiferroic BiFeO 3 thin films and exchange bias of Co 0.9Fe 0.1/BiFeO 3 heterostructures. Two distinct types of interactions - an enhancement of the coercive field (exchange enhancement) and an enhancement of the coercive field combined with large shifts of the hysteresis loop (exchange bias) - have been observed in these heterostructures, which depend directly on the type and crystallography of the nanoscale (∼2 nm) domain walls in the BiFeO 3 film. We show that the magnitude of the exchange bias interaction scales with the length of 109° ferroelectric domain walls in the BiFeO 3 thin films which have been probed via piezoresponse force microscopy and X-ray magnetic circular dichroism. © 2008 American Chemical Society.
BT - Nano Letters
DO - 10.1021/nl801391m
LA - eng
M1 - 7
N1 - cited By 231
N2 - We demonstrate a direct correlation between the domain structure of multiferroic BiFeO 3 thin films and exchange bias of Co 0.9Fe 0.1/BiFeO 3 heterostructures. Two distinct types of interactions - an enhancement of the coercive field (exchange enhancement) and an enhancement of the coercive field combined with large shifts of the hysteresis loop (exchange bias) - have been observed in these heterostructures, which depend directly on the type and crystallography of the nanoscale (∼2 nm) domain walls in the BiFeO 3 film. We show that the magnitude of the exchange bias interaction scales with the length of 109° ferroelectric domain walls in the BiFeO 3 thin films which have been probed via piezoresponse force microscopy and X-ray magnetic circular dichroism. © 2008 American Chemical Society.
PY - 2008
SP - 2050
EP - 2055
T2 - Nano Letters
TI - Nanoscale control of exchange bias with BiFeO 3 thin films
VL - 8
SN - 15306984
ER -