Monte Carlo simulation of the magnetic properties of a spin-1 Blume–Capel nanowire

Quantum Monte Carlo simulation of the ferroelectric or ferrielectric nanowire with core shell morphology

“…It is well known that the pseudo-spins system becomes more disordered as the transverse field or the temperature increases and there exists a critical transverse field Ω c and a critical temperature T c above which the average spontaneous polarization P t z disappears. Similar behavior have been observed in many theoretical and experimental studies [48][49][50][51][52][53][54][55][56][57][58]. Concerning the behavior of P t x and U, it is remarked that we have also a ferroelectric behavior like that is for Ω = J / 6.0 …”

“…6. For low values of the transverse field and the temperature, the system exhibits triple hysteresis loops, this behavior has been observed in ferrielectric systems with strong interfacial coupling [48,49]. When we increase the value of the transverse field or the temperature, the hysteresis behavior of the system becomes similar to that of a ferroelectric system, that is, the outer loops disappear and the size of the central one reduces first and disappears after.…”

“…The triple hysteresis loops behavior has been observed in Refs. [48,49]. We can see that for and U present in addition to the two central peaks, two other peaks corresponding to the outer loops.…”

Low‐temperature properties of a magnetic nanowire

“…It was found that in the low free‐carrier density, the magnetic state is just like Landau levels and edge states, but at higher carrier density, the electron–electron interaction make the prismatic heterointerface inhomogeneous . In the use of MC simulation, the hysteresis behavior, susceptibility, specific heat, and internal energy have been investigated , and it was acquired that in the ferromagnetic system, the hysteresis loop changes from one hysteresis loop to two loops and the double peaks in the curves of the susceptibility and specific heat become a single peak with increasing temperature; in the ferrimagnetic system, there are three hysteresis loop; in the antiferromagnetic system, the hysteresis loops disappear when temperature increases. The exchange‐bias effect of composite magnetic nanoparticles with a ferromagnetic core and a ferrimagnetic disordered shell has also been investigated by MC simulation , and it was found that exchange bias field is enhanced and the remanent magnetization reduces with the increase in shell thickness; the exchange bias and coercive field increase with a reduction in the core size.…”

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

“…In the experimental area, a variety of magnetic nanowires have been synthesized and their magnetic properties have been investigated, such as Fe-Co [40], Co-Pt [41], Ni [42], Ga 1−x Cu x N [43], Fe [44], Fe 3 O 4 [45], Co [46], Fe-Pt [47], Ni-Fe [48], and Co-Cu [49]. In theoretical area, the magnetic nanowires have been investigated within the various theoretical methods, such as MCS [50][51][52][53], EFT [10,[12][13][14][54][55][56][57][58][59][60][61], and MFA [62,63].…”