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Cumulative effects of fluctuations and magnetoelectric coupling in two-dimensional RMnO3 (R = Tb, Lu and Y) multiferroics
Physics Letters A ( IF 2.6 ) Pub Date : 2021-03-26 , DOI: 10.1016/j.physleta.2021.127305
G.E. Tongue Magne , R.M. Keumo Tsiaze , A.J. Fotué , N.M. Hounkonnou , L.C. Fai

This work investigates the cumulative effects of fluctuations of order parameters and magnetoelectric coupling on the two-dimensional RMnO3 (R = Tb, Lu and Y). The study is carried out through a modified Landau model resulting from microscopic considerations. It is shown that during the transition from the paramagnetic (paraelectric) to ferromagnetic (ferroelectric) phases, the appearance of the spontaneous magnetization and polarization strongly depends on the fluctuations of order parameters and the magnetoelectric coupling. The prevalence of the fluctuation effects on the magnetoelectric constraints is also exhibited. This study can be used to understand the mechanism of magnetization induced by a ferroelectric phase transition and vice versa observed in multiferroic compounds.



中文翻译:

二维RMnO 3(R = Tb,Lu和Y)多铁磁中的涨落和磁电耦合的累积效应

这项工作研究了阶次参数和磁电耦合的波动对二维的累积影响 RMnO3(R = Tb,Lu和Y)。该研究是通过修改后的Landau模型进行的,该模型是从微观角度考虑得出的。结果表明,在从顺磁(顺电)相转变为铁磁(铁电)相期间,自发磁化和极化的出现在很大程度上取决于有序参数和磁电耦合的波动。还显示了对磁电约束的波动效应的普遍性。这项研究可以用来理解由铁电相变引起的磁化机理,反之亦然。

更新日期:2021-03-31
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