The magnetic properties of spin crossover manganese(III) compounds

A theoretical model to explain the phenomenon of spin crossover in the [MnL2]NO3 compound is elaborated. The model takes into account the low symmetry crystal field acting on the manganese ion and the cooperative long-range electron-deformational interaction facilitating the spin transition. The ran...

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Autor principal: Roman, Marianna
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Publicado: D.Ghitu Institute of Electronic Engineering and Nanotechnologies 2011
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spelling oai:doaj.org-article:0f5c4cd9bb514cdc99b1d6cda477a95c2021-11-21T12:01:54ZThe magnetic properties of spin crossover manganese(III) compounds2537-63651810-648Xhttps://doaj.org/article/0f5c4cd9bb514cdc99b1d6cda477a95c2011-08-01T00:00:00Zhttps://mjps.nanotech.md/archive/2011/article/21357https://doaj.org/toc/1810-648Xhttps://doaj.org/toc/2537-6365A theoretical model to explain the phenomenon of spin crossover in the [MnL2]NO3 compound is elaborated. The model takes into account the low symmetry crystal field acting on the manganese ion and the cooperative long-range electron-deformational interaction facilitating the spin transition. The range of the crystal field parameters for which the low-lying part of the energy spectrum of an isolated MnIII ion consists of two orbitally non-degenerate levels with spins S=1 and 2 is determined. It is demonstrated that the S=1 state is the ground one in a narrow range of parameters. The ls-hs transition is considered as a cooperative phenomenon driven by the interaction of the electronic shells of the MnIII ions with the all-round full symmetric deformation that is extended over the crystal lattice via the acoustic phonon field. Quite good agreement has been obtained between the calculated and experimental values of the magnetic susceptibility and the effective magnetic moment.Roman, MariannaD.Ghitu Institute of Electronic Engineering and NanotechnologiesarticlePhysicsQC1-999ElectronicsTK7800-8360ENMoldavian Journal of the Physical Sciences, Vol 10, Iss 3-4, Pp 254-267 (2011)
institution DOAJ
collection DOAJ
language EN
topic Physics
QC1-999
Electronics
TK7800-8360
spellingShingle Physics
QC1-999
Electronics
TK7800-8360
Roman, Marianna
The magnetic properties of spin crossover manganese(III) compounds
description A theoretical model to explain the phenomenon of spin crossover in the [MnL2]NO3 compound is elaborated. The model takes into account the low symmetry crystal field acting on the manganese ion and the cooperative long-range electron-deformational interaction facilitating the spin transition. The range of the crystal field parameters for which the low-lying part of the energy spectrum of an isolated MnIII ion consists of two orbitally non-degenerate levels with spins S=1 and 2 is determined. It is demonstrated that the S=1 state is the ground one in a narrow range of parameters. The ls-hs transition is considered as a cooperative phenomenon driven by the interaction of the electronic shells of the MnIII ions with the all-round full symmetric deformation that is extended over the crystal lattice via the acoustic phonon field. Quite good agreement has been obtained between the calculated and experimental values of the magnetic susceptibility and the effective magnetic moment.
format article
author Roman, Marianna
author_facet Roman, Marianna
author_sort Roman, Marianna
title The magnetic properties of spin crossover manganese(III) compounds
title_short The magnetic properties of spin crossover manganese(III) compounds
title_full The magnetic properties of spin crossover manganese(III) compounds
title_fullStr The magnetic properties of spin crossover manganese(III) compounds
title_full_unstemmed The magnetic properties of spin crossover manganese(III) compounds
title_sort magnetic properties of spin crossover manganese(iii) compounds
publisher D.Ghitu Institute of Electronic Engineering and Nanotechnologies
publishDate 2011
url https://doaj.org/article/0f5c4cd9bb514cdc99b1d6cda477a95c
work_keys_str_mv AT romanmarianna themagneticpropertiesofspincrossovermanganeseiiicompounds
AT romanmarianna magneticpropertiesofspincrossovermanganeseiiicompounds
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