中国物理B ›› 2013, Vol. 22 ›› Issue (11): 116401-116401.doi: 10.1088/1674-1056/22/11/116401

• CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES • 上一篇    下一篇

Effects of the trimodal random field on the magnetic properties of a spin-1 Ising nanotube

H. Magoussi, A. Zaim, M. Kerouad   

  1. Laboratoire Physique des Matériaux et Modélisation des Systémes (LP2MS), Unité Associée au CNRST-URAC: 08, University Moulay Ismail, Faculty of Sciences, B. P. 11201, Zitoune, Meknes, Morocco
  • 收稿日期:2013-02-28 修回日期:2013-05-23 出版日期:2013-09-28 发布日期:2013-09-28
  • 基金资助:
    Project supported by URAC: 08, the project RS: 02 (CNRST), and the Swedish Research Links programme dnr-348-2011-7264.

Effects of the trimodal random field on the magnetic properties of a spin-1 Ising nanotube

H. Magoussi, A. Zaim, M. Kerouad   

  1. Laboratoire Physique des Matériaux et Modélisation des Systémes (LP2MS), Unité Associée au CNRST-URAC: 08, University Moulay Ismail, Faculty of Sciences, B. P. 11201, Zitoune, Meknes, Morocco
  • Received:2013-02-28 Revised:2013-05-23 Online:2013-09-28 Published:2013-09-28
  • Contact: A. Zaim, M. Kerouad E-mail:ah_zaim@yahoo.fr;kerouad@fs-umi.ac.ma
  • Supported by:
    Project supported by URAC: 08, the project RS: 02 (CNRST), and the Swedish Research Links programme dnr-348-2011-7264.

摘要: In this work, the hysteresis behavior of a nanotube, consisting of a ferromagnetic core of spin-1 atoms surrounded by a ferromagnetic shell of spin-1 atoms with ferro-or anti-ferromagnetic interfacial coupling is studied in the presence of a random magnetic field. Based on a probability distribution method, the effective-field theory has been used to investigate the effects of the random magnetic field, the interfacial coupling constant, and the temperature on the hysteresis loops of the nanotube. Some characteristic behaviors have been found, such as the existence of double or triple hysteresis loops for appropriate values of the system parameters. The remanent magnetization and the coercive field, as functions of the temperature, are examined.

关键词: effective-field theory, nanotube, critical phenomena

Abstract: In this work, the hysteresis behavior of a nanotube, consisting of a ferromagnetic core of spin-1 atoms surrounded by a ferromagnetic shell of spin-1 atoms with ferro-or anti-ferromagnetic interfacial coupling is studied in the presence of a random magnetic field. Based on a probability distribution method, the effective-field theory has been used to investigate the effects of the random magnetic field, the interfacial coupling constant, and the temperature on the hysteresis loops of the nanotube. Some characteristic behaviors have been found, such as the existence of double or triple hysteresis loops for appropriate values of the system parameters. The remanent magnetization and the coercive field, as functions of the temperature, are examined.

Key words: effective-field theory, nanotube, critical phenomena

中图分类号:  (Statistical mechanics of model systems (Ising model, Potts model, field-theory models, Monte Carlo techniques, etc.))

  • 64.60.De
61.46.Fg (Nanotubes) 68.35.Rh (Phase transitions and critical phenomena)