Dependencia de la Temperatura de Compensación en Modelos de Multicapas Ferrimagnéticas de tipo $3(S_{1-x}{\sigma }_x)/\sigma$

Abstract

We investigate numerically the behavior of the compensation temperature, $T_{comp}$, in ferrimagnetic multilayer in the type $3(S_{1-x}{\sigma }_x)/\sigma$ with respect to the increase of the spin concentration ${\sigma }_x$, which are randomly distributive in a mix of spins $S=0,\pm 1$ and $\sigma =\pm 1/2$, with ferromagnetic interaction between spins of the same type, and antiferromagnetic interaction for spins of different type. We have found that $T_{comp}$ decrease slowly with the increase of $x$, until ${\sigma }_x$ represent a little more than 40\% of the spin mixture. For higher concentration values $T_{comp}$ drops abruptly and disappears, as predicted by experimental result.

4 pages, 3 figures