Tackling Complex Phenomena in Nanoscale Multiferroics

Author

Wei Ren ; Bellaiche, L. ; Lisenkov, S.

Author_Institution

Phys. Dept., Univ. of Arkansas, Fayetteville, AR, USA

fYear

2010

fDate

14-17 June 2010

Firstpage

259

Lastpage

262

Abstract

An atomistic scheme is used to study the dependence of nanodots and ultra-thin films made of the lead-free BiFeO₃ (BFO) multiferroic material on electrical boundary conditions. The ground-state patterns of the electrical dipoles, oxygen octahedral tiltings and magnetic dipoles are found to dramatically depend on such electrical boundary conditions, as well as on the dimensionality of the BFO nanostructure. These unusual dependencies are of large fundamental importance, and may open the door for novel devices with unprecedented performances.

Keywords

ab initio calculations; bismuth compounds; electric moments; ferrites; ferroelectric materials; ferroelectric thin films; ferromagnetic materials; ground states; magnetic moments; magnetic thin films; multiferroics; nanomagnetics; nanoparticles; BFO multiferroic material; BiFeO₃; atomistic effective Hamiltonian scheme; complex phenomena; electrical boundary conditions; electrical dipoles; first-principles-based calculations; ground-state patterns; magnetic dipoles; nanodots; nanoscale multiferroics; nanostructure dimensionality; oxygen octahedral tiltings; ultrathin films; Boundary conditions; Films; Magnetic domain walls; Magnetic domains; Magnetic tunneling; Magnetomechanical effects;

fLanguage

English

Publisher

ieee

Conference_Titel

High Performance Computing Modernization Program Users Group Conference (HPCMP-UGC), 2010 DoD

Conference_Location

Schaumburg, IL

Print_ISBN

978-1-61284-986-7

Type

conf

DOI

10.1109/HPCMP-UGC.2010.20

Filename

6018001