Effective distance of a ferromagnetic trilayer Ising nanostructure with an ABA stacking sequence

Numan Şarlı, Salih Akbudak, Yasin Polat and M. Recai Ellialtıoğlu

Physica A: Statistical Mechanics and its Applications, 2015, vol. 434, issue C, 194-200

Abstract: In this study, we investigated the effects of the distance between two nearest-neighbor layers on the magnetization and hysteresis properties (remanence, coercivity and loop area) of a ferromagnetic trilayer Ising nanostructure (TLINS) with an ABA stacking sequence using the Kaneyoshi approach within the effective field theory. We found that the ferromagnetic properties of the TLINS were highly dependent on the distance (d) between the layers. The layers had strong interactions at a certain minimum distance (dmin) ​but no interactions at a certain maximum distance (dmax). Thus, we suggest that there is an effective distance (deff) at dmin≤deff≤dmax for the TLINS. We observed that the critical temperature increased sharply as the distance decreased at d≤dmin,TC ​ increased slowly as the distance decreased at deff, and TC ​had a certain constant value at d≥dmax. The critical field points increased rapidly as the distance decreased and HC ​had different values for the central and edge atoms at d≤dmin. HC ​increased slowly as the distance decreased at deff and HC ​had the same value for the central and edge atoms at deff, while HC ​had a certain constant value at d≥dmax. Distance had no effect on the critical temperature and critical field points of the TLINS and they had a constant value at d≥dmax; thus, the TLINS behaved as a single layer Ising nanostructure at great distances.

Keywords: ABA stacking; Distance effect; Effective field theory; Trilayer Ising nanostructure (search for similar items in EconPapers)
Date: 2015
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:434:y:2015:i:c:p:194-200

DOI: 10.1016/j.physa.2015.04.002

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