Multiferroic coupling in nanoscale BiFeO3

Abstract

Using the results of x-ray and neutron diffraction experiments, we show that the ferroelectric polarization, in ~22 nm particles of BiFeO3, exhibits a jump by ~30% around the magnetic transition point T_N (~635 K) and a suppression by ~7% under 5T magnetic field at room temperature (<<T_N). These results confirm presence of strong multiferroic coupling even in nanoscale BiFeO3 and thus could prove to be quite useful for applications based on nanosized devices of BiFeO3.

4 pages including 4 figures and supplementary data; accepted for publication in Appl. Phys. Lett

References in corpus (5)

• Multiferroicity, The coupling between magnetic and polarization
• Electric-field-induced spin-flop in BiFeO3 single crystals at room-temperature
• The ferroelectric-paraelectric phase transition in BiFeO3: crystal structure of the orthorhombic beta-phase
• The beta to gamma (insulator-metal) transition in BiFeO3
• Particle size dependence of magnetization and non-centrosymmetry in nanoscale BiFeO3

Cited by in corpus (6)

• In-plane Dielectric and Magnetoelectric Studies of BiFeO3
• Large magnetoelectric coupling in nanoscale BiFeO${}_3$ from direct electrical measurements
• Nonmonotonic particle-size-dependence of magnetoelectric coupling in strained nanosized particles of BiFeO${}_3$
• Large structure-dependent room temperature exchange bias in self-assembled BiFeO3 nanoparticles
• Large magnetocapacitance in electronic ferroelectric manganite systems
• Nonmonotonic magnetic field dependence of remanent ferroelectric polarization in reduced-graphene-oxide-BiFeO${}_3$ nanocomposite