ABSTRACT In this current paper, we purpose a ferrielectric mixed (7/2;2) spins Ising model to describe the dendrimer superlattice using Monte Carlo study (MCs). The ground state phase diagrams of dendrimer superlattice with half and integer mixed spins in (DS, EZ ), (JσS, EZ ) and (JσS, DS ) planes (DS (or σ): crystal field and Ez : Electric field) were obtained. Typical temperature dependences of thermodynamics quantities such as polarisation of the ferroelectric, internal energy and ferroelectric hysteresis loop were presented under the influence of various physical parameters (crystal filed, exchanges interactions, etc.). The ferroelectric phase diagram of critical temperature was obtained for several exchange interactions. We found some interesting ferroelectric hysteresis loops behaviour for certain physical parameters such as temperature, exchange interactions between spins mixed and crystal field applied on two spins. Our results are consistent with those obtained by some theoretical and experimental researches.

中文翻译：

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树枝状大分子超晶格的基态相图和铁电磁滞回线行为：蒙特卡罗研究

摘要在当前的论文中，我们旨在使用亚铁电混合 (7/2;2) 自旋 Ising 模型来描述使用蒙特卡罗研究 (MCs) 的树枝状大分子超晶格。得到了在 (DS, EZ )、(JσS, EZ ) 和 (JσS, DS ) 平面（DS（或σ）：晶体场和 Ez：电场）中具有半和整数混合自旋的树枝状聚合物超晶格的基态相图. 在各种物理参数（晶体场、交换相互作用等）的影响下，呈现了铁电极化、内能和铁电磁滞回线等热力学量的典型温度依赖性。获得了几种交换相互作用的临界温度铁电相图。我们发现了一些有趣的铁电磁滞回线行为对于某些物理参数，例如温度、自旋混合和施加在两个自旋上的晶体场之间的交换相互作用。我们的结果与一些理论和实验研究得到的结果一致。