Monte Carlo simulation of polarization plateaus and hysteresis behaviors of an antiferroelectric/ferroelectric BiFeO3/YMnO3 Ising bilayer

• Published in: Superlattices and microstructures Vol. 136; p. 106293
• Main Authors: Wang, Ze-yuan, Li, Qi, Wang, Feng, Sun, Lei, Tian, Ming, Wang, Wei
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.12.2019
• Subjects: BiFeO3/YMnO3 bilayer; Crystal-field; Electric hysteresis loops; Exchange coupling; Monte Carlo; Polarization plateaus; Crystal-field; Polarization plateaus; BiFeO3/YMnO3 bilayer; Exchange coupling; Monte Carlo; Electric hysteresis loops
• ISSN: 0749-6036; 1096-3677
• DOI: 10.1016/j.spmi.2019.106293

The mixed-spin Ising model with the crystal-field and the external electric field is used to describe an antiferroelectric/ferroelectric BiFeO3/YMnO3 bilayer structure. Using Monte Carlo simulation, we discuss the polarization plateaus and the hysteresis behaviors of the bilayer structure under the influence of different physical parameters. The results illustrate that the crystal-field, the exchange coupling and the external electric field have important roles in the low-temperature dielectric properties and multiple electric hysteresis loops of the antiferroelectric/ferroelectric BiFeO3/YMnO3 bilayer structure. •An antiferroelectric/ferroelectric BiFeO3/YMnO3 Ising bilayer structure is proposed.•Effects of crystal-fields, exchange couplings and temperature on the polarization plateaus are investigated.•Phase diagrams of polarization plateaus are obtained.•Multiple hysteresis behaviors are discovered for certain physical physical parameters.