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Magnetism of Nano-Graphene with Defects: A Monte Carlo Study

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Abstract

The effect of the defects on magnetic properties of a bilayer Ising ferromagnetic antiferromagnetic model is studied by Monte Carlo simulations, for a nano-graphene lattice with spins that can take the values σ=3/2 and S=5/2. We consider two ferromagnetic and antiferromagnetic bilayers with N=42 spins, with a random number of defects. We only consider the nearest-neighbor interactions between the site i and j on each layer. The effects of the defects on magnetization are investigated for fixed temperature, crystal field, and magnetic field values. The thermal dependency of each layer magnetization is calculated for fixed defect rate values K 3 and K 5, the crystal field, and external magnetic field. The magnetization hysteresis loops for several rate defects are also investigated as a function of the external magnetic field.

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Authors and Affiliations

  1. Laboratory of Materials, Process, Environment and Quality, National School of Applied Sciences, Cady Ayyad University, Safi, Morocco

    R. Masrour

  2. Laboratoire de Magnétisme et Physique des Hautes Energies L.M.P.H.E.URAC 12, Faculté des Sciences, Université Mohammed V-Agdal, B.P. 1014, Rabat, Morocco

    R. Masrour, L. Bahmad & A. Benyoussef

  3. Institute of Nanomaterials and Nanotechnologies, MAScIR, Rabat, Morocco

    A. Benyoussef & M. Hamedoun

  4. Hassan II Academy of Science and Technology, Rabat, Morocco

    A. Benyoussef

  5. Institut Néel, CNRS et Université Joseph Fourier, BP 166, 38042, Grenoble cedex 9, France

    E. K. Hlil

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  1. R. Masrour
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  2. L. Bahmad
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  3. A. Benyoussef
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Masrour, R., Bahmad, L., Benyoussef, A. et al. Magnetism of Nano-Graphene with Defects: A Monte Carlo Study. J Supercond Nov Magn 26, 679–685 (2013). https://doi.org/10.1007/s10948-012-1785-9

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  • DOI: https://doi.org/10.1007/s10948-012-1785-9

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