Title :
Multiferroic Domain Structure in Orthorhombic Multiferroics of Cycloidal Spin Order: Three-Dimensional Phase Field Simulations
Author :
Chu, Peter ; Wang, Y.L. ; Lin, Li-Chiun ; Dong, Shuai ; Liu, J.-M.
Author_Institution :
Lab. of Solid State Microstructures, Nanjing Univ., Nanjing, China
Abstract :
The three-dimensional (3-D) multiferroic domain patterns in multiferroic rare-earth manganites of the -plane cycloidal spin (CS) order and -plane CS order are investigated by means of Monte Carlo simulation based on the multiferroic Heisenberg model and phase-field simulation based on the time-dependent Ginzburg-Landau equation. It is revealed that the ferroelectric domains associated with both the -plane CS order and -plane CS order align in the 180°-domain pattern with polarization parallel with domain walls. The mechanism dominating the domain patterns is discussed.
Keywords :
Ginzburg-Landau theory; Heisenberg model; Monte Carlo methods; electric domains; multiferroics; Monte Carlo simulation; ab-plane cycloidal spin order; bc-plane cycloidal spin order; ferroelectric domains; multiferroic Heisenberg model; multiferroic domain structure; orthorhombic multiferroics; three-dimensional phase field simulations; time-dependent Ginzburg-Landau equation; Color; Couplings; Iron; Lattices; Magnetic domains; Mathematical model; Solid modeling; Cycloidal spin order; multiferroic domain; phase field model;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2013.2243902
