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Magnetic properties of mixed Ising nanoparticles with core-shell structure

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  • Ersin Kantar
  • Bayram Deviren
  • Mustafa Keskin

Abstract

Magnetic properties of Ising nanoparticles with spin-1/2 core and spin-3/2 shell structure are systematically studied by the use of the effective-field theory with correlations. Particular emphasis is given to the effects of the crystal-field, core and shell interactions and interface coupling on magnetizations, compensations points, magnetic susceptibilities and hysteresis behaviors. In order to confirm the stability of the solutions we also investigate the free energy of the system. According to values of Hamiltonian parameters, the system only undergoes a second-order phase transition. A number of characteristic behaviors are found, such as the existence of triple hysteresis loops for appropriate values of the system parameters affected by the crystal field, temperature, and interface coupling. Moreover, Q-, R-, N-, M-, P- and S-types of compensation behaviors in the Néel classification nomenclature exist in the system that are also strongly dependent on interaction parameters; hence, one or two compensation points have been found. The results are compared with those of recently published works and a qualitatively good agreement is found. Copyright EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2013

Suggested Citation

  • Ersin Kantar & Bayram Deviren & Mustafa Keskin, 2013. "Magnetic properties of mixed Ising nanoparticles with core-shell structure," The European Physical Journal B: Condensed Matter and Complex Systems, Springer;EDP Sciences, vol. 86(6), pages 1-13, June.
    • Handle: RePEc:spr:eurphb:v:86:y:2013:i:6:p:1-13:10.1140/epjb/e2013-40080-9
    DOI: 10.1140/epjb/e2013-40080-9
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    Cited by:

    1. Şarlı, Numan & Akbudak, Salih & Polat, Yasin & Ellialtıoğlu, M. Recai, 2015. "Effective distance of a ferromagnetic trilayer Ising nanostructure with an ABA stacking sequence," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 434(C), pages 194-200.

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    Keywords

    Statistical and Nonlinear Physics;

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