Journal
PHYSICAL REVIEW B
Volume 87, Issue 14, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.87.140405
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Funding
- UMD-NSF-MRSEC [DMR 0520471]
- NSF DMR [0603644]
- ARO [W911NF-07-1-0410]
- W. M. Keck Foundation
- Scientific User Facilities Division, Office of Basic Energy Sciences, US Department of Energy
- National Institute of Standards and Technology, US Department of Commerce [70NANB7H6177]
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [0603644] Funding Source: National Science Foundation
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Direct evidence of controlling the population of magnetic domains in BiFeO3 thin films through electric field is reported using neutron diffraction. By fabricating BiFeO3 thin films on vicinal SrTiO3 substrates, we have achieved ferroelectric monodomains as confirmed by piezoresponse force microscopy. The application of an electric field between the bottom SrRuO3 and the top electrode switches the ferroelectric domain state with concomitant changes in magnetic reflections observed with neutron diffraction, indicating changes in the antiferromagnetic domain populations. The observed magnetoelectric switching behavior by neutron diffraction is compared with the electric-field effect on the magneto-optical Kerr effect measurement on patterned pads of exchange coupled Co film deposited on top of the BiFeO3 films. The present result shows possible new directions for the realization of magnetoelectric devices. DOI: 10.1103/PhysRevB.87.140405
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