Ferrimagnetism in the mixed spin Ising system on a two-fold Cayley tree

The possibility of two compensation points in a ferrimagnetic mixed spin-1 and spin-3/2 Ising system using Bethe lattice approach

“…The most extensively studied mixed-spin Ising model is the spin-1/2 and spin-1 mixed system. The magnetic properties of these models with a crystal-field interaction have been examined by several methods [3][4][5][6][7][8][9][10]. Although the majority of studies have focused on mixed spin-1/2 and spin-S (S41/2) Ising models, the mixed-spin Ising systems consisting of higher spins are not without interest.…”

“…It has also attracted particular interest because the Bethe lattice reflects essential features of systems, even when conventional mean-field theories fail. In the literature, much work on the Bethe lattice has been reported, recently [9,10,[22][23][24][25][26][27]. However, the role of the crystal field parameters on the compensation points in the present mixed spin system has also not been discussed.…”

“…We believe that such an investigation may be important from both an experimental and a theoretical perspective. As in our previous works for mixed-spin Ising models [9,10,22,23], the surface effects are avoided if we look for the attractors of the recursion relations, which correspond to solutions in the innermost regions of a very large lattice. The physical solutions are expected to be equivalent to the results of a Bethe-Peierls' approximation with the same coordination number.…”

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

“…Temperaturas menores que la temperatura crítica (T C ), que surgen bajo ciertas condiciones, cuando las magnetizaciones de las distintas subredes se cancelan (se compensan), de modo que la magnetización total del sistema es cero. La aparición de puntos de compensación es de gran importancia tecnológica, puesto que a T=T Comp sólo se requiere un pequeño campo conductor para invertir la magnetización resultante (Ekiz, 2005). Además, en este punto la coercitividad del material se incrementa dramáticamente permitiendo la formación de pequeños dominios magnéticos estables (Buendía y Machado, 2000), lo cual facilita los procesos de escritura y borrado en memorias magneto-ópticas de alta densidad (Deviren et al, 2009a;Hurtado y Buendía, 2003), donde los cambios de temperatura se hacen calentando localmente la película magnética, mediante un rayo láser (Kiwi, 2001).…”

Magnetic properties of the mixed spin-5/2 and spin-3/2 Blume-Capel Ising system on the two-fold Cayley tree

“…Ekiz studied the mixed spin- 1 2 and spin-1 on the two-fold Cayley tree [14][15][16] by means of exact recursion relations and found a tricritical point for some values of the coordination number [4]. More recently, Zhang and Kong [13] used the same technique to investigate the mixed spin- 3 2 and spin-1 2 Blume-Capel model on the same Cayley lattice.…”