Spin compensation temperatures in the Monte Carlo study of a mixed spin-2 and spin-5/2 Ising ferrimagnetic system

“…There are a lot of studies carried out with different combinations of spins, such as exact solutions [8][9][10][11] for the simplest combination spin-1/2 and 1. Moreover, the mixed-spin Ising model has been studied by different approaches such as mean-field approximation [12][13][14][15][16][17], effective-field theory [18][19][20][21], renormalization group [22], numerical Monte Carlo simulations [23][24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Random-anisotropy mixed-spin Ising on a triangular lattice

Santana¹,

Arruda²,

Godoy³

2023

Condens. Matter Phys.

View full text Add to dashboard Cite

We have studied the mixed spin-1/2 and 1 Ising ferrimagnetic system with a random anisotropy on a triangular lattice with three interpenetrating sublattices A, B, and C. The spins on the sublattices are represented by σA (states ±1/2), σB (states ±1/2), and SC (states ±1, 0). We have performed Monte Carlo simulations to obtain the phase diagram temperature kBT/|J| versus the strength of the random anisotropy D/|J|. The phase boundary between two ferrimagnetic FR1 and FR2 phases at lower temperatures are always first-order for p < 0.25 and second-order phase transition between the FR1, FR2 and the paramagnetic P phases. On the other hand, for values of p ⪆ 0.5, the phase diagram presents only second-order phase transition lines.

show abstract

“…Kaneyoshi et al [14,15] and Plascak et al [16] provided theoretical investigations of magnetic properties and the influence of a single-ion anisotropy in the compensation temperature (T comp ) of a bipartite ferrimagnets such as MnCu(pba − OH)(H 2 ) 3 . These spin systems have been investigated using a variety of approaches, such as effective-field theory [17][18][19][20][21][22][23][24], mean-field approximation [9,[25][26][27][28][29], renormalization-group [30], numerical Monte Carlo simulations [31][32][33]. In particular, the model that presents the combination of spins (S 1 = 1 and S 2 = 3/2) has been too much studied, so that there is synthesized…”

Section: Introductionmentioning

confidence: 99%

Phase diagram of the mixed-spin (1,3/2) Ising ferrimagnetic system with two different anisotropies

da Silva,

de Arruda,

Godoy

2020

Preprint

View full text Add to dashboard Cite

In this work, we have performed Monte Carlo simulations to study phase transitions in a mixed spin-1 and spin-3/2 Ising ferrimagnetic system on the square and cubic lattices and with two different single-ion anisotropies. This lattice is divided in two interpenetrating sublattices with spins S A = 1 (states ±1 and 0) on the sublattice A and S B = 3/2 (states ±3/2, ±1/2) on the sublattice B. We have used single-ion anisotropies D A and D B acting on the sites of the sublattice A and B, receptively. We have determined the phase diagrams of the model in the temperature T versus the single-ion anisotropies strength D A and D B plane and shown that the system exhibits both second-and first-order phase transitions. We also have shown that this system displays compensation points for some values of the anisotropies.

show abstract

Spin compensation temperatures in the Monte Carlo study of a mixed spin-2 and spin-5/2 Ising ferrimagnetic system

Cited by 39 publications

References 69 publications

Investigating the general condition of compensation temperature appearance in ferrimagnetic system

Investigating the general condition of compensation temperature appearance in ferrimagnetic system

Random-anisotropy mixed-spin Ising on a triangular lattice

Phase diagram of the mixed-spin (1,3/2) Ising ferrimagnetic system with two different anisotropies

Contact Info

Product

Resources

About