Critical and compensation behaviors of an Ising mixed spin-(5/2,3/2) on a nanographene layer

被引：17
|
作者：
Feraoun, A. [1 ]
Amraoui, S. [1 ]
Kerouad, M. [1 ]
机构：
[1] Univ Moulay Ismail, Lab Phys Mat & Modelisat Syst LP2MS, Unite Associee CNRST URAC 08, Fac Sci, Zitoune 11201, Meknes, Morocco
来源：
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 2018年 / 124卷 / 04期
关键词：
NANO-GRAPHENE BILAYER; MONTE-CARLO; MAGNETIC-PROPERTIES; MODEL; COUPLINGS; PLATEAUS; SPIN-3/2; FIELD;
D O I：
10.1007/s00339-018-1726-y
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We have applied Monte Carlo simulation to study the magnetic behavior of a mixed spins S = +/- 5/2,+/- 3/2,+/- 1/2 and sigma = +/- 3/2,+/- 1/2 Ising system of a nanographene layer, where the spins S alternate with the spins sigma in two interpenetrating sublattices A and B, respectively. The Hamiltonian of the system contains an exchange interaction between nearest neighbors, a longitudinal magnetic field h, and a four-spin interaction J(4). The antiferromagnetic and the ferromagnetic exchange interactions have been investigated. Interesting phenomena have been found. In particular, the system can exhibit a compensation temperature in the presence of h and J(4).
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页数：8
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