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<p>This paper investigates the magnetic behavior of C<sub>60</sub> and (C<sub>60</sub>)<sub>2</sub> fullerene nanostructures through Monte Carlo simulations of the Blume-Emery-Griffiths model. To analyze the blocking temperatures (T<sub>B</sub>) of both structures under various conditions, the research substitutes carbon atoms with their spin-1 counterparts. The research shows that due to greater exchange interactions and reduced surface effects, (C<sub>60</sub>)<sub>2</sub> surpasses C<sub>60</sub> in possessing higher blocking temperature. Significant consideration is given to important parameters such as the magnetization and susceptibility, the inflicted magnetic field, crystal field, linear and biquadratic exchange couplings. These findings pertain to the fabrication of these materials and devices, while also shedding light on the dynamics of fullerene system magnetization.</p>

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Monte Carlo Simulations of Magnetic Behavior in C60 and Dimeric (C60)2 Fullerenes: A Comparative Study Using the Blume-Emery-Griffiths Model

  • 期刊论文

  • 发表日期：

    2025年12月7日

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  • Z. Fadil,
  • Chaitany Jayprakash Raorane,
  • R. El Fdil,
  • A. Jabar,
  • Khaled H. Mahmoud,
  • Abdulrahman A. Alsayyari,
  • Seong-Cheol Kim

摘要

This paper investigates the magnetic behavior of C60 and (C60)2 fullerene nanostructures through Monte Carlo simulations of the Blume-Emery-Griffiths model. To analyze the blocking temperatures (TB) of both structures under various conditions, the research substitutes carbon atoms with their spin-1 counterparts. The research shows that due to greater exchange interactions and reduced surface effects, (C60)2 surpasses C60 in possessing higher blocking temperature. Significant consideration is given to important parameters such as the magnetization and susceptibility, the inflicted magnetic field, crystal field, linear and biquadratic exchange couplings. These findings pertain to the fabrication of these materials and devices, while also shedding light on the dynamics of fullerene system magnetization.