Mixed spin- and spin- Ising system in a longitudinal magnetic field

Ekiz, Cesur

doi:10.1016/j.jmmm.2004.12.012

Cited by 36 publications

(9 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…At higher temperatures (T > T k ) the magnetization decreases so slowly that it is almost constant. These discontinuities have been reported before in mixed Ising models in the presence of magnetic fields [33][34][35]. In order to understand this effect we plot the absolute values of the sublattice magnetizations, |M A | and |M B |, in Fig.…”

Section: Effects Of D Asupporting

confidence: 67%

Effects of an external magnetic field on a mixed spin-3/2 and spin-5/2 Ising ferrimagnet: A Monte Carlo study

Reyes

Espriella

Buendı́a

2015

Phys. Status Solidi B

View full text Add to dashboard Cite

The magnetic properties of a ferrimagnetic mixed spin‐3/2 and spin‐5/2 Ising model with two crystal fields, in a longitudinal magnetic field, are studied by Monte Carlo simulations. The role of the different interactions in the Hamiltonian is explored. We investigate the thermal variations of the total magnetization and present phase diagrams. Depending on the region of the parameter space, we find some interesting phenomena such as compensation temperatures, and discontinuities in the magnetizations. We find that when an external field is present, the discontinuities are due to a simultaneous reversal of the spins of the sublattices. They signal the change between two different antiferromagnetic orderings, and are basically due to a competition between the different interactions in the Hamiltonian. We plot the dependence of the temperature at which the new phase occurs, for the different parameters in the Hamiltonian. Our results differ radically from earlier results obtained by other authors based on mean field theories. We find compensation temperatures at some particular combinations of parameters. Mean field theory predicts a wide range of parameters where the system presents even several compensation temperatures; in most of these regions we found none. In contrast with the mean field analysis that only looks at the total magnetizations, our study includes an analysis of the behavior of the sublattice magnetizations.

show abstract

Section: Effects Of D Asupporting

confidence: 67%

Effects of an external magnetic field on a mixed spin-3/2 and spin-5/2 Ising ferrimagnet: A Monte Carlo study

Reyes

Espriella

Buendı́a

2015

Phys. Status Solidi B

View full text Add to dashboard Cite

show abstract

“…In order to have a general overview about it, it is beneficial to classify the studies in two categories based on the investigation of equilibrium and nonequilibrium phase transition properties of such type of mixed spin systems. In the former group, static or equilibrium properties of these type of systems have been analyzed within the several frameworks such as exact 9,10 , effective field theory with correlations [11][12][13][14][15][16][17][18][19][20][21][22] , Bethe lattice [23][24][25][26] , exact star-triangle mapping transformation 27 , high temperature series expansion method 29 , multisublattice Green-function technique 30 , Oguchi approximation 31 as well as Monte Carlo simulation 32 . It is underlined in the some studies noted above that when the system includes only the nearest-neighbor interaction between spins and the single-ion anisotropy, the temperature variation of resultant magnetization does not exhibit a compensation behavior.…”

Section: Introductionmentioning

confidence: 99%

Nonequilibrium dynamics of a mixed spin-1/2 and spin-3/2 Ising ferrimagnetic system with a time dependent oscillating magnetic field source

Vatansever

Polat

2015

Journal of Magnetism and Magnetic Materials

View full text Add to dashboard Cite

Nonequilibrium phase transition properties of a mixed Ising ferrimagnetic model consisting of spin-1/2 and spin-3/2 on a square lattice under the existence of a time dependent oscillating magnetic field have been investigated by making use of Monte Carlo simulations with single-spin flip Metropolis algorithm. A complete picture of dynamic phase boundary and magnetization profiles have been illustrated and the conditions of a dynamic compensation behavior have been discussed in detail. According to our simulation results, the considered system does not point out a dynamic compensation behavior, when it only includes the nearest-neighbor interaction, single-ion anisotropy and an oscillating magnetic field source. As the next-nearest-neighbor interaction between the spins-1/2 takes into account and exceeds a characteristic value which sensitively depends upon values of single-ion anisotropy and only of amplitude of external magnetic field, a dynamic compensation behavior occurs in the system. Finally, it is reported that it has not been found any evidence of dynamically first-order phase transition between dynamically ordered and disordered phases, which conflicts with the recently published molecular field investigation, for a wide range of selected system parameters.

show abstract

“…However, since most magnetic ions take a spin greater than 1 2 , recent interest in the study of spin mixtures both greater than 1 2 has arisen. The most investigated, within effectivefield techniques, is the ðS,sÞ ¼ ð 3 2 ,1Þ spin mixture in square, honeycomb and simple-cubic lattices, which shows multicritical points in the temperature vs anisotropy plane [28][29][30][31][32][33][34], although there are other spin mixtures, such as ðS,sÞ ¼ ð1, 1 2 Þ,ð 3 2 , 1 2 Þ,ð2, 3 2 Þ, which have also called the attention recently [35][36][37][38][39].…”

Section: Introductionmentioning

confidence: 99%

Formation of quantum magnetization plateaux in mixed-spin Ising chains with single-ion anisotropy

Solano-Carrillo

Franco

Silva–Valencia

2010

Journal of Magnetism and Magnetic Materials

View full text Add to dashboard Cite

Mixed spin- and spin- Ising system in a longitudinal magnetic field

Cited by 36 publications

References 31 publications

Effects of an external magnetic field on a mixed spin-3/2 and spin-5/2 Ising ferrimagnet: A Monte Carlo study

Effects of an external magnetic field on a mixed spin-3/2 and spin-5/2 Ising ferrimagnet: A Monte Carlo study

Nonequilibrium dynamics of a mixed spin-1/2 and spin-3/2 Ising ferrimagnetic system with a time dependent oscillating magnetic field source

Formation of quantum magnetization plateaux in mixed-spin Ising chains with single-ion anisotropy

Contact Info

Product

Resources

About