Magnetic behaviors in a ternary metallic nanoisland with bilayer hexagonal core-shell structure. (December 2019)

• Record Type: Journal Article
• Authors: Yang, Shao-qing; Wang, Wei; Wang, Feng; Li, Bo-chen; Wu, Hao-jia; Yang, Min; Xu, Jing-hua
• Is Part Of: Journal of physics and chemistry of solids. Volume 135(2019)
• Publication Date: 2019-12
• Subjects: Ternary metallic nanoisland -- Magnetization -- Susceptibility -- Blocking temperature -- Hysteresis loops; Solids -- Periodicals; Solides -- Périodiques; Solids; Periodicals; 530.41
• DOI: 10.1016/j.jpcs.2019.109110
• Languages: English
• ISSNs: 0022-3697

Abstract

Abstract: The Monte Carlo simulation has been applied to study the magnetic behaviors of a ferrimagnetic mixed-spin (1, 2, 5/2) Ising nanoisland with bilayer hexagonal core-shell structure in an external longitudinal magnetic field. We have investigated the influences of the anisotropies, the exchange couplings, the longitudinal field and temperature on magnetization, susceptibility, internal energy and hysteresis loop of the present nanoisland. The behavior of the X parameter (the magnetization, susceptibility, internal energy and blocking temperature) as a function of the parameter is studied. Particularly, the multiple hysteresis loop behaviors have been discovered, such as triple, quintuple, septuple, ninefold and elevenfold hysteresis loops under certain physical parameters. Highlights: A ferrimagnetic mixed-spin (1, 2, 5/2) Ising nanoisland with bilayer hexagonal core-shell structure is proposed. The magnetization, the susceptibility and the internal energy are studied by Monte Carlo simulation. The phase diagrams of the blocking temperature in different parameter planes are obtained. The multiple hysteresis loop behaviors are found for certain values of physical parameters.