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<p>This research gives a full investigation of magnetic properties and stability of a nested borospherene (<i>B</i><sub>40</sub>) nanostructure based on Monte Carlo simulations through the Blume–Capel model. The model is given as core–shell structure with mixed spins (3/2,1) with antiferromagnetic core–shell exchange coupling (<i>j</i><sub><i>CS</i></sub>). The study rigorously investigates the influence of the most significant parameters-crystal field (<i>d</i>), internal core coupling (<i>j</i><sub><i>C</i></sub>), interfacial coupling (<i>j</i><sub><i>CS</i></sub>), and temperature (<i>t</i>)-on magnetism, i.e., ground-state phase diagrams and complex magnetization plateaus creation. The results have the overall magnetization show six plateaus, the reversal process being regulated by two key fields (<i>h</i><sub><i>C</i>1</sub> and <i>h</i><sub><i>C</i>2</sub>) and a saturation field (<i>h</i><sub><i>S</i></sub>). Anisotropy (|<i>d</i>|) is observed to be the most dominating controlling parameter of magnetic hardness because it linearly increases <i>h</i><sub><i>C</i>2</sub> and <i>h</i><sub><i>S</i></sub>. Contrarily, the increase of the core internal stiffness (<i>j</i><sub><i>C</i></sub>) surprisingly reduces <i>h</i><sub><i>S</i></sub> and helps the subsequent magnetic reversal, and the interfacial coupling (|<i>j</i><sub><i>CS</i></sub>|) actually controls the order and plateau’s structure. Furthermore, thermal fluctuations, which are introduced by high temperature, more and more smooth and minimize the transitions. The above observations gain profound knowledge about the intrinsic magnetic stability mechanisms and transition characteristics in borospherene-derived nanostructures and therefore contain limitless prospects for future utilization in nanomagnetics and spintronics.</p>

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Monte Carlo Study on the Magnetization Plateaus and Thermal Stability of Nested Borospherene Nanostructures

  • 期刊论文

  • 发表日期：

    2025年12月12日

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  • Z. Fadil,
  • A. Jabar,
  • Mohamed Sheikh,
  • Ayman A. Ghfar,
  • Chaitany Jayprakash Raorane,
  • Seong-Cheol Kim

摘要

This research gives a full investigation of magnetic properties and stability of a nested borospherene (B40) nanostructure based on Monte Carlo simulations through the Blume–Capel model. The model is given as core–shell structure with mixed spins (3/2,1) with antiferromagnetic core–shell exchange coupling (jCS). The study rigorously investigates the influence of the most significant parameters-crystal field (d), internal core coupling (jC), interfacial coupling (jCS), and temperature (t)-on magnetism, i.e., ground-state phase diagrams and complex magnetization plateaus creation. The results have the overall magnetization show six plateaus, the reversal process being regulated by two key fields (hC1 and hC2) and a saturation field (hS). Anisotropy (|d|) is observed to be the most dominating controlling parameter of magnetic hardness because it linearly increases hC2 and hS. Contrarily, the increase of the core internal stiffness (jC) surprisingly reduces hS and helps the subsequent magnetic reversal, and the interfacial coupling (|jCS|) actually controls the order and plateau’s structure. Furthermore, thermal fluctuations, which are introduced by high temperature, more and more smooth and minimize the transitions. The above observations gain profound knowledge about the intrinsic magnetic stability mechanisms and transition characteristics in borospherene-derived nanostructures and therefore contain limitless prospects for future utilization in nanomagnetics and spintronics.