Hexagonal-Type Ising Nanowire with Core/Shell Structure Designed with Half-Integer Spins: Compensation Behaviors and Phase Diagrams in the Temperature and Interaction Planes

Abstract

The effective field theory with correlation is used to investigate the magnetic behaviors of the mixed spin-1/2 and spin-3/2 hexagonal Ising nanowire (HIN) with core/shell in the crystal field. The total magnetization as a function of the temperature is used to describe the compensation behaviors of the system, and the N-, Q-, P-, R-, and S-type compensation types are given. The dependence of the phase diagrams on interaction parameters is studied in detail and presented the phase diagrams in the six different planes, namely (.Besides, the system exhibit second-order phase transition and first-order phase transitions, which can be found via the variations of the total magnetization with the crystal field in the mixed spin-1/2 and spin-3/2 HIN.

A theoretical investigation on equilibrium magnetic properties in nanowire arrays

“…Theoretical and numerical approaches, including mean-field approximation, effective-field theory, cluster variational theory, and Monte Carlo simulations, have been extensively employed to study magnetic nanowire systems [29][30][31][32][33][34][35][36][37][38][39]. Among these approaches, effective field theory has been widely used as a powerful tool to investigate magnetic properties and understand the behavior of nanowires [40][41][42][43][44].…”

Single‐Ion Anisotropy Effect on the Critical and Hysteresis Behaviors of a Mixed‐Spin (1, 3/2) Square Ising Nanowire

“…Due to the simplicity and practicality of Ising models, core-shell nanowires have the particularity of being represented by various single-and mixed-spin Ising systems and that can be solved approximately or numerically allowing comparison with experiment. Recently, several methods have been applied to the examination of these systems, such as effective field theory (EFT), [19][20][21] mean field theory (MFT), [22][23][24] Green's function method, [25] and Monte Carlo simulation (MCS). [24,[26][27][28][29] These studies are of great significance not only for the theoretical study of ferrimagnetic nanowires but also for experimental and practical applications.…”

Anomalous thermodynamics in a mixed spin-1/2 and spin-1 hexagonal nanowire system

“…Recently, the magnetic properties of cylindrical nanowires have shown great potential applications such as magnetic recording, shift registers and logic gates, among other possible candidates. Indeed, over the last decades, several researches have been devoted to examine the magnetic and thermodynamic properties of nanowire systems, both experimentally [1][2][3][4][5][6] and theoretically [7][8][9][10][11][12][13][14][15][16][17][18].…”

“…From the theoretical point of view, several techniques have been used, such as mean-field approximation (MFA) [8,18], effective field theory (EFT) [7,13,14], Monte Carlo simulation (MC) [18][19][20], among others [21,22]. Special attention has been given to the study of mixed spin systems, in particular those composed by spin-1 and spin-1/2 particles arranged in hexagonal structures [7,8,14,15,18]. These works have predicted the occurrence of first and second order phase transitions as well as spontaneous magnetization at finite temperature.…”