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Size and diluted magnetic properties of diamond shaped graphene quantum dots: Monte Carlo study

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  • Masrour, R.
  • Jabar, A.

Abstract

The magnetic properties of diamond shaped graphene quantum dots have been investigated by varying their sizes with the Monte Carlo simulation. The magnetizations and magnetic susceptibilities have been studied with dilutions x (magnetic atom), several sizes L (carbon atom) and exchange interaction J between the magnetic atoms. The all magnetic susceptibilities have been situated at the transitions temperatures of each parameters. The obtained values increase when increases the values of x, L and J. The effect of exchanges interactions and crystal field on the magnetization has been discussed. The magnetic hysteresis cycles for several dilutions x, sizes L, exchange interactions J and temperatures T. The magnetic coercive increases with increasing the exchange interactions and decreases when the temperatures values increasing.

Suggested Citation

  • Masrour, R. & Jabar, A., 2018. "Size and diluted magnetic properties of diamond shaped graphene quantum dots: Monte Carlo study," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 497(C), pages 211-217.
    • Handle: RePEc:eee:phsmap:v:497:y:2018:i:c:p:211-217
    DOI: 10.1016/j.physa.2017.12.141
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    References listed on IDEAS

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    1. Thiago Guerra & Sérgio Azevedo & Marcelo Machado, 2016. "Defective graphene and nanoribbons: electronic, magnetic and structural properties," The European Physical Journal B: Condensed Matter and Complex Systems, Springer;EDP Sciences, vol. 89(3), pages 1-9, March.
    2. Thiago Guerra & Sérgio Azevedo & Marcelo Machado, 2016. "Defective graphene and nanoribbons: electronic, magnetic and structural properties," The European Physical Journal B: Condensed Matter and Complex Systems, Springer;EDP Sciences, vol. 89(3), pages 1-9, March.
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    Cited by:

    1. Si, Nan & Zhang, Fan & Jiang, Wei & Zhang, Yan-Li, 2018. "Magnetic and thermodynamics properties graphene monolayer with defects," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 510(C), pages 641-648.
    2. Lu, Zhao-Ming & Si, Nan & Wang, Ya-Ning & Zhang, Fan & Meng, Jing & Miao, Hai-Ling & Jiang, Wei, 2019. "Unique magnetism in different sizes of center decorated tetragonal nanoparticles with the anisotropy," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 523(C), pages 438-456.

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