TY - JOUR
KW - Electricity
KW - Energy
KW - Temperature
KW - Pulsed laser deposition
KW - Film
KW - Laser
KW - Magnetic field
KW - Iron
KW - Arrays
KW - Nanostructured materials
KW - Oxygen
KW - Ferroelectric materials
KW - Nanotechnology
KW - Electric field
KW - Article
KW - Priority journal
KW - Titanium
KW - Magnetization
KW - Magnets
KW - Cobalt
KW - Thermodynamics
KW - Nanoparticle
KW - Transducer
KW - Magnet
KW - Parameter
KW - Barium compounds
KW - Couplings
KW - Magnetic order
KW - Barium
KW - Molecular interaction
AU - H Zheng
AU - J Wang
AU - S.E Lofland
AU - Z Ma
AU - L Mohaddes-Ardabili
AU - T Zhao
AU - L Salamanca-Riba
AU - S.R Shinde
AU - S.B Ogale
AU - F Bai
AU - D Viehland
AU - Y Jia
AU - D.G Schlom
AU - M Wuttig
AU - A Roytburd
AU - Ramamoorthy Ramesh
AB - We report on the coupling between ferroelectric and magnetic order parameters in a nanostructured BaTiO3-CoFe2O4 ferroelectromagnet. This facilitates the interconversion of energies stored in electric and magnetic fields and plays an important role in many devices, including transducers, field sensors, etc. Such nanostructures were deposited on single-crystal SrTiO3 (001) substrates by pulsed laser deposition from a single Ba-Ti-Co-Fe-oxide target. The films are epitaxial in-plane as well as out-of-plane with self-assembled hexagonal arrays of CoFe 2O4 nanopillars embedded in a BaTiO3 matrix. The CoFe2O4 nanopillars have uniform size and average spacing of 20 to 30 nanometers. Temperature-dependent magnetic measurements illustrate the coupling between the two order parameters, which is manifested as a change in magnetization at the ferroelectric Curie temperature. Thermodynamic analyses show that the magnetoelectric coupling in such a nanostructure can be understood on the basis of the strong elastic interactions between the two phases.
BT - Science
DO - 10.1126/science.1094207
LA - eng
M1 - 5658
N1 - cited By 1764
N2 - We report on the coupling between ferroelectric and magnetic order parameters in a nanostructured BaTiO3-CoFe2O4 ferroelectromagnet. This facilitates the interconversion of energies stored in electric and magnetic fields and plays an important role in many devices, including transducers, field sensors, etc. Such nanostructures were deposited on single-crystal SrTiO3 (001) substrates by pulsed laser deposition from a single Ba-Ti-Co-Fe-oxide target. The films are epitaxial in-plane as well as out-of-plane with self-assembled hexagonal arrays of CoFe 2O4 nanopillars embedded in a BaTiO3 matrix. The CoFe2O4 nanopillars have uniform size and average spacing of 20 to 30 nanometers. Temperature-dependent magnetic measurements illustrate the coupling between the two order parameters, which is manifested as a change in magnetization at the ferroelectric Curie temperature. Thermodynamic analyses show that the magnetoelectric coupling in such a nanostructure can be understood on the basis of the strong elastic interactions between the two phases.
PY - 2004
SP - 661
EP - 663
T2 - Science
TI - Multiferroic BaTiO3-CoFe2O4 Nanostructures
VL - 303
SN - 00368075
ER -