Magnetic properties of a three-walled mixed-spin nanotube

•A three-walled mixed-spin (½, 1, ½) nanotube is constructed.•Different magnetic properties for ferromagnetic and ferrimagnetic cases are established.•Temperature, exchange couplings, and anisotropy have a strong effect on the magnetization plateaus and the multiple-loop hysteresis cycles.•Original...

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Veröffentlicht in:Journal of magnetism and magnetic materials 2021-04, Vol.523, p.167565, Article 167565
Hauptverfasser: Elmaddahi, Zakaria, El Hafidi, Mohamed
Format: Artikel
Sprache:eng
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Zusammenfassung:•A three-walled mixed-spin (½, 1, ½) nanotube is constructed.•Different magnetic properties for ferromagnetic and ferrimagnetic cases are established.•Temperature, exchange couplings, and anisotropy have a strong effect on the magnetization plateaus and the multiple-loop hysteresis cycles.•Original behaviors are revealed. The effective field theory with correlations has been employed to study the hysteresis behavior of a ferromagnetic and ferrimagnetic three-walled mixed-spin Ising nanotube with an inner hexagonal vacancy. The effects of different exchange couplings, single-ion anisotropies, and temperature on the hysteresis loops of the sublattices and the overall system are attentively discussed. Multiple hysteresis loops have been observed in the system under certain physical hamiltonian parameters. It is found that the remanences and the coercivity of the sublattices and the system are strongly affected by the temperature, the exchange couplings, and the anisotropy. A satisfactory agreement can be qualitatively achieved by comparing our results with experiments and theoretical studies. Amazing behaviors are revealed thanks to the geometry, the different spins, and the multiple interactions involved in the system.
ISSN:0304-8853
1873-4766
DOI:10.1016/j.jmmm.2020.167565