Monte Carlo study of the random magnetic field effect on the phase diagrams of a spin-1 cylindrical nanowire

被引：30
作者：
Zaim, N. [1 ]
Zaim, A. [1 ]
Kerouad, M. [1 ]
机构：
[1] Univ Moulay Ismail, Unite Associee CNRST URAC 08, LP2MS, Fac Sci, BP 11201, Zitoune, Meknes, Morocco
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2016年 / 663卷
关键词：
Monte Carlo techniques; Nanowire; Critical phenomena; Compensation temperature; ISING-MODEL; RENORMALIZATION-GROUP; THERMODYNAMICAL PROPERTIES; THEORETICAL INVESTIGATIONS; CRITICAL-BEHAVIOR; CUBIC NANOWIRE; CRYSTAL-FIELD; FILM;
D O I：
10.1016/j.jallcom.2015.12.145
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
In this work, the phase diagrams and the tricritical behavior of a cylindrical nanowire, consisting of a ferromagnetic core of spin-1 atoms surrounded by a ferromagnetic shell of spin-1 atoms with ferromagnetic or antiferromagnetic interfacial coupling are studied in the presence of a random magnetic field. Based on Metropolis algorithm, Monte Carlo simulation has been used to investigate the effects of the exchange coupling of the shell, the interfacial coupling, and the random magnetic field on the critical behavior of the nanowire. Depending on the values of the system parameters, different types of phase diagrams were found. A variety of multicritical points such as tricritical point, isolated critical point, and triple point are obtained. In addition, the compensation temperature can be appear in the ferrimagnetic system case. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：516 / 523
页数：8
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