کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7941758 1513201 2016 17 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Monte Carlo simulations of the spin-2 Blume-Emery-Griffiths model with four-spin interactions
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
Monte Carlo simulations of the spin-2 Blume-Emery-Griffiths model with four-spin interactions
چکیده انگلیسی
The magnetic properties of a spin S = 2 Ising system with bilinear exchange interaction J1, the biquadratic exchange interaction K, four-spin exchange interactions J4 and crystal field Δ are discussed using the Monte Carlo simulation. The lattice is divided into two sublattices: A and B, for which we compute the magnetizations mA and mB. The phase obtained diagrams of this system are deduced in the planes: (T, Δ/J1), (K/J1, Δ/J1), (Δ/J1, J4/J1) and (J4/J1, K/J1). In addition to the usual phases, we found a new phase called nonmagnetic quadratic, for which the magnetizations are mA ≠ mB and the quadrupolar moments are so that are qA = qB. Furthermore, the behavior of the magnetizations as a function of temperature, crystal field, four-spin exchange interactions and biquadratic exchange interaction are deduced.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Superlattices and Microstructures - Volume 100, December 2016, Pages 818-825
نویسندگان
, , , , , ,