TY - JOUR
KW - Manganese oxide
KW - Electric fields
KW - Ferromagnetism
KW - Ferroelectricity
KW - Ferroelectric polarization
KW - Electric-field control
KW - Spin polarized currents
KW - Ferromagnetic materials
KW - Magnetization
KW - Multiferroic materials
KW - Magnetoelectronics
KW - Electric field effects
KW - Magnetic storage
KW - Conducting channels
KW - Field-effect devices
KW - Antiferromagnetic order parameter
KW - Ferromagnetic orderings
AU - S.M Wu
AU - S.A Cybart
AU - P Yu
AU - M.D Rossell
AU - J.X Zhang
AU - Ramamoorthy Ramesh
AU - R.C Dynes
AB - Electric-field control of magnetization has many potential applications in magnetic memory storage, sensors and spintronics. One approach to obtain this control is through multiferroic materials. Instead of using direct coupling between ferroelectric and ferromagnetic order parameters in a single-phase multiferroic material, which only shows a weak magnetoelectric effect, a unique method using indirect coupling through an intermediate antiferromagnetic order parameter can be used. In this article, we demonstrate electrical control of exchange bias using a field-effect device employing multiferroic (ferroelectric/antiferromagnetic) BiFeO 3 as the dielectric and ferromagnetic La 0.7 Sr 0.3 MnO 3 as the conducting channel; we can reversibly switch between two distinct exchange-bias states by switching the ferroelectric polarization of BiFeO 3. This is an important step towards controlling magnetization with electric fields, which may enable a new class of electrically controllable spintronic devices and provide a new basis for producing electrically controllable spin-polarized currents. © 2010 Macmillan Publishers Limited. All rights reserved.
BT - Nature Materials
DO - 10.1038/nmat2803
LA - eng
M1 - 9
N1 - cited By 484
N2 - Electric-field control of magnetization has many potential applications in magnetic memory storage, sensors and spintronics. One approach to obtain this control is through multiferroic materials. Instead of using direct coupling between ferroelectric and ferromagnetic order parameters in a single-phase multiferroic material, which only shows a weak magnetoelectric effect, a unique method using indirect coupling through an intermediate antiferromagnetic order parameter can be used. In this article, we demonstrate electrical control of exchange bias using a field-effect device employing multiferroic (ferroelectric/antiferromagnetic) BiFeO 3 as the dielectric and ferromagnetic La 0.7 Sr 0.3 MnO 3 as the conducting channel; we can reversibly switch between two distinct exchange-bias states by switching the ferroelectric polarization of BiFeO 3. This is an important step towards controlling magnetization with electric fields, which may enable a new class of electrically controllable spintronic devices and provide a new basis for producing electrically controllable spin-polarized currents. © 2010 Macmillan Publishers Limited. All rights reserved.
PB - Nature Publishing Group
PY - 2010
SP - 756
EP - 761
T2 - Nature Materials
TI - Reversible electric control of exchange bias in a multiferroic field-effect device
VL - 9
SN - 14761122
ER -