2014/02/25 by Yan Qi, An Du
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Anisotropy #Ferroelectricity #Field (mathematics) #Magnetic anisotropy #Magnetic field #Magnetization #Monte Carlo method #Multiferroics #Multiferroics and related materials #Physics of Superconductivity and Magnetism #Polarization (electrochemistry) #cond-mat.mtrl-sci
paper · pdf · doi:10.1088/1674-1056/23/8/087502
arxiv created 2014/02/25 · openalex publication_date 2014/07/31 · arxiv updated 2015/06/18 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/06
A spin model of LiCu 2 O 2 compound with ground state of ellipsoidal helical structure is adopted. Taking into account the interchain coupling and exchange anisotropy, we investigate the magnetoelectric properties in a rotating magnetic field and perform the Monte Carlo simulation on a two-dimensional lattice. A prominent anisotropic response is observed in both the magnetization curve and the polarization curve, qualitatively coinciding with the behaviors that are detected in the experiment. In addition, the influences of the magnetic field with various magnitudes on polarization are also explored and analyzed in detail. As the magnetic field increases, a much smoother polarization of angle dependence is exhibited, indicating the strong correlation between the magnetic and ferroelectric orders.