Magnetoelectric coupling in ε-Fe2O3 nanoparticles

Oriented attachment and exchange coupling of -Fe2O3 nanoparticles

Large magnetoelectric coupling in Co4Nb2O9

Magnetoelectric materials which simultaneously exhibit electric polarization and magnetism have attracted more and more attention due to their novel physical properties and promising applications for next-generation devices. Exploring new materials with outstanding magnetoelectric performance, especially the manipulation of magnetization by electric field, is of great importance. Here, we demon...

Magnetoelectric coupling at metal surfaces.

Magnetoelectric coupling allows the magnetic state of a material to be changed by an applied electric field. To date, this phenomenon has mainly been observed in insulating materials such as complex multiferroic oxides. Bulk metallic systems do not exhibit magnetoelectric coupling, because applied electric fields are screened by conduction electrons. We demonstrate strong magnetoelectric coupli...

Electrodeposition of maghemite ( -Fe2O3) nanoparticles

Electrodeposition of maghemite ( -Fe2O3) nanoparticles Hosik Park a,b, Perla Ayala a, Marc A. Deshusses a, Ashok Mulchandani a, Heechul Choi b, Nosang V. Myung a,∗ a Department of Chemical and Environmental Engineering, University of California-Riverside, Riverside, CA 92521, United States b Department of Environmental Science and Engineering, Gwangju Institute of Science and Technology, 1 Oryo...

Dynamical magnetoelectric coupling in helical magnets.

We develop a theory of collective mode dynamics in the helical magnets coupled to electric polarization via spin-orbit interaction. The low-lying modes associated with the ferroelectricity are not the transverse optical phonons, but are the spin waves hybridized with the electric polarization. This hybridization leads to the Drude-like dielectric function epsilon(omega) in the limit of zero mag...