Hysteresis and Compensation Behaviors of Mixed Spin-1 and Spin-2 Hexagonal Ising Nanowire System

Abstract

By utilizing the framework of the effective-field theory with correlation, hysteresis and compensation behaviors of mixed spin-1 and spin-2 hexagonal Ising nanowire system is investigated in detail. The effects of Hamiltonian parameters on hysteresis behaviors are discussed, in detail. The compensation behavior of the system is also studied and according to values of Hamiltonian parameters, the Q-, S-, R-and N-type compensation behaviors is obtained in the system. Finally, the obtaining results are compared with some experimental and theoretical results and found in a qualitatively good agreement.

Magnetic properties and phase diagrams of mixed spin-1 and spin-1/2 Ising model on a checkerboard square structure: A Monte Carlo study

“…We found that the shape of the hysteresis loop changes when increasing the value of J2; the system has a single hysteresis loop for J2=0.5 and 1.0, while at very high J2 = 5.0 two steps hysteresis loop exist. The double hysteresis loop has been observed in mixed spin-1 and spin-2 hexagonal Ising nanowire systems [40]. The effect of ferrimagnetic coupling does not affect the shape of the hysteresis loop; for this reason, we preferred not to show it in the context.…”

The impact of segment dilution on the magnetic and hysteretic properties of ferrimagnetic (1/2-1) segmented Ising nanowire

“…The investigation of hysteresis loops in lowdimensional nanostructures has been conducted through the utilization of MCS [43,[65][66][67][68][69]. Kantar [70] examined the thermal and magnetic properties of a hexagonal Ising nanowire and various other systems [25,71] using EFT. When analyzing the hysteresis behavior in the figures, two different states of p b were taken into account, such as p b = 0.1 and p b = 1.0.…”

“…Experimentally, the core/shell nanostructures, such as core/shell nanowires and core/shell nanotubes have been widely studied [12][13][14][15][16][17][18][19]. Furthermore, by using a variety of theoretical techniques, mainly effective-field theory (EFT) [20][21][22][23][24][25][26][27][28], Bethe Lattice [29][30][31], mean-field theory (MFT) [32][33][34][35], and Monte Carlo simulations (MCS) [36][37][38][39][40][41][42][43], and the magnetic properties of core/shell nanostructures have also been studied. Similarly, magnetically segmented nanostructures composed of alternating ferromagnetic or nonmagnetic materials have been extensively explored [44][45][46][47][48][49][50].…”

Magnetic properties and hysteresis behavior of a ferrimagnetic mixed spin-3/2 and spin-5/2 Ising nanowire

“…Another interesting system is the Ising model with mixed half-integer spins S = 3/2 and S = 5/2 which has been studied theoretically by several methods, such as the effective field theory with correlations (Zhang et al , 2005), the exact recursion relations on the Bethe lattice (Albayrak and Yigit, 2006), the mean field approximation (Mohamad, 2013) and the MCS (Vélez et al , 2014; De La Espriella and Buendía, 2011); all these works exhibit a rich critical behavior in phase diagrams, especially the first-order and second-order phase transitions and the compensation temperatures. In addition, there are several experimental studies for isoelectric compounds and structural species which are systems with mixed spins (3/2 and 5/2), such as Cs 2 Mn II [V II (CN) 6 ] (Entley and Girolami, 1995), CsMn II [Cr III (CN) 6 ]H 2 O (Babel, 1986) and Mn II [Mn IV (CN) 6 ] x H 2 O (Klenze et al , 1980); these three compounds have d 5 Mn II centers and d 3 metal centers (V II , Cr III and Mn IV ), and the magnetic transition temperatures obtained are about 125 K, 90 K and, 49 K respectively. Furthermore, another experimental works have shown that the mixed spin-3/2 and spin-5/2 systems are responsible for unusual magnetic properties of the bacterial heme proteins known as the ferricytochromes c' (Maltempo, 1974).…”