Compensation temperature of the mixed-spin ising model on the hexagonal lattice

Figueiredo, W.; Godoy, M.; Leite, Vanessa Souza

doi:10.1590/s0103-97332004000300010

Cited by 16 publications

(11 citation statements)

References 11 publications

(9 reference statements)

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“…The N-type curve is being characterized by one compensation point at which resultant magnetization disappears due to the complete cancelation of the sub-lattice magnetization. We should mention that the compensation behaviors have been experimentally obtained in reference [60] and theoretically in different Ising systems [28,[61][62][63][64][65][66][67][68]. It is also worth mentioning that recently, the compensation behaviors have been theoretically obtained in the kinetic Ising systems [69][70][71].…”

Section: The Dynamic Compensation Behaviorsmentioning

confidence: 97%

The Dynamic Hysteresis Curves and Compensation Types of Kinetic Bilayer Honeycomb Lattice System with AB Stacking Geometry

Kantar

2015

J Supercond Nov Magn

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The dynamic magnetic properties in a kinetic spin-1/2 bilayer honeycomb lattice (BHL) system with AB stacking geometry under a time-dependent oscillating external magnetic field for both ferromagnetic and antiferromagnetic interactions are studied within the meanfield dynamical equations and the Glauber-type stochastic dynamics approach. First, we study the thermal behavior of the dynamic order parameters. Then, we investigate the temperature dependence of the dynamic total magnetization to ?nd the dynamic compensation points as well as to determine the type of behavior. We also examine the dynamic hysteresis behaviors of the system. Some characteristic phenomena are found depending on the ratio of the physical parameters and frequency of oscillating magnetic field. According to the values of Hamiltonian parameters P-, L-, S-, R-, Q-and N-type compensation behaviors and square-like and S-shaped single hysteresis loops as well as double and triple hysteresis loops exist in the system. Our results are in agreement with some experimental works in recent literature.

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Section: The Dynamic Compensation Behaviorsmentioning

confidence: 97%

The Dynamic Hysteresis Curves and Compensation Types of Kinetic Bilayer Honeycomb Lattice System with AB Stacking Geometry

Kantar

2015

J Supercond Nov Magn

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“…Besides that, ferrimagnetic ordering plays a crucial role in several novel materials based on molecular compounds [1,2]. Thus, the study of the Ising model with mixed spins of different magnitudes has attracted considerable attention.…”

Section: Introductionmentioning

confidence: 99%

The Possibility of Many Compensation Points in a Mixed-Spin Ising Ferrimagnetic System

Mohamad

2013

ISRN Condensed Matter Physics

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The magnetic properties of a ferrimagnetic mixed spin-3/2 and spin-5/2 Ising model with different anisotropies are investigated by using the mean-field approximation (MFA). In particular, the effect of magnetic anisotropies on the compensation phenomenon, acting on A-atoms and B-ones for the mixed-spin model, has been considered in a zero field. The free energy of a mixed-spin Ising ferrimagnetic system from MFA of the Hamiltonian is calculated. By minimizing the free energy, we obtain the equilibrium magnetizations and the compensation points. The phase diagram of the system in the anisotropy dependence of transition temperature has been discussed as well. Our results of this model predict the existence of many (two or three) compensation points in the ordered system on a simple cubic lattice.

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“…Es importante establecer que estas propiedades son características del modelo, y no un resultado de la aproximación que se usa. Existen casos de algunos modelos, donde las aproximaciones de campo medio predicen la existencia de puntos de compensación, en los que simulaciones posteriores con métodos no perturbativos (Monte Carlo) han demostrado que no los poseen (Figueiredo et al, 2004;De La Espriella y Buendía, 2011).…”

Section: Introductionunclassified

Estudio Monte Carlo de un Ferrimagneto de Ising Mixto con Diferentes Anisotropías

2012

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ResumenMediante simulaciones de Monte Carlo, se analizan las propiedades magnéticas de un modelo ferrimagnético de Ising mixto, con espines S = ±3/2, ±1/2 y σ = ±5/2, ±3/2, ±1/2 distribuidos sobre una red cuadrada, con diferentes anisotropías. Se supuso que la interacción de intercambio a primeros vecinos, J 1 , entre espines S y σ es antiferromagnética (J 1 < 0). También, se consideró el efecto de las intensidades de las anisotropías de ión simple, debidas a los campos cristalinos de las subredes S y σ, D S y D σ , respectivamente. Se investigó la existencia y dependencia de las temperaturas de compensación del modelo con respecto a las anisotropías de ión simple. Fijando el parámetro D S y variando la intensidad de D σ , aparecen posibles transiciones de fase de primer orden. El análisis de las temperaturas críticas se obtiene a través de los máximos del calor específico del sistema. Los diagramas de fase a temperaturas finitas se obtienen en el plano temperatura-anisotropía. Abstract Using MonteCarlo simulations, the magnetic properties of a mixed Ising ferrimagnetic model with spins S = ±3/2, ±1/2 y σ = ±5/2, ±3/2, ±1/2 distributed on a square lattice with different anisotropies was analyzed. It was assumed that the exchange interaction to nearest neighbors, J 1 , between spins S and σ, is antiferromagnetic (J 1 < 0). Also, it was considered that the effect of the intensities of the single-ion anisotropies, due to the crystalline fields of the sublattices S and σ, D S and D σ respectively. The existence and dependence of the compensation temperature in the model with respect to the single-ion anisotropies was also studied. By fixing the parameter D S and varying the intensity of D σ it probable phase transitions of first order appear. The analysis of the critical temperatures is obtained through the maximum of the specific heat of the system. Phase diagrams at finite temperatures are obtained in the temperature-anisotropy plane.

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Compensation temperature of the mixed-spin ising model on the hexagonal lattice

Cited by 16 publications

References 11 publications

The Dynamic Hysteresis Curves and Compensation Types of Kinetic Bilayer Honeycomb Lattice System with AB Stacking Geometry

The Dynamic Hysteresis Curves and Compensation Types of Kinetic Bilayer Honeycomb Lattice System with AB Stacking Geometry

The Possibility of Many Compensation Points in a Mixed-Spin Ising Ferrimagnetic System

Estudio Monte Carlo de un Ferrimagneto de Ising Mixto con Diferentes Anisotropías

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