Characterization of Spin Crossover Compounds

A special issue of Magnetochemistry (ISSN 2312-7481). This special issue belongs to the section "Spin Crossover and Spintronics".

Deadline for manuscript submissions: closed (30 September 2021) | Viewed by 2850

Special Issue Editor


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Guest Editor
Université Montpellier, Institut Charles Gerhardt, France
Interests: Electronic charge transfer; magnetic properties; X-ray absorption spectroscopy; Mössbauer spectroscopy.

Special Issue Information

Dear Colleagues,

Over the last several decades, the spin crossover process has been thoroughly investigated. During these years, our understanding of this phenomenon has continuously grown, and the approach to the subject has been more and more improved and refined. Nowadays, a variety of both experimental techniques and computational methods is used to study not only the spin crossover process itself, but also concomitant effects like variation of bond lengths or its impact on optical or vibrational properties. The effects of temperature variation, pressure, radiation, electric or magnetic fields on the electronic ground state of the spin crossover ions have been investigated.

Frequently, the complete experimental characterisation of a spin crossover compound necessitates a multi-technique approach in order to obtain a fully coherent picture of the behaviour of the spin crossover ion and its environment.

I suggest to establish in this Special Issue a collection of articles describing new research in this field and illustrating the currently employed state-of-the-art concepts and approaches. The articles should also demonstrate the valuable information the various methods – whether experimental or theoretical, whether recently developed or well established – provide for the analysis and the understanding of the spin crossover phenomenon.

In this way this Special Issue will – hopefully – serve as a source of information and inspiration for both beginners and scientists already active in this field.

Dr. Manfred Womes
Guest Editor

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Keywords

  • Spin crossover compounds
  • Computational methods
  • Experimental techniques
  • Spectroscopy
  • Crystallography
  • Magnetic interactions

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Published Papers (1 paper)

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Research

15 pages, 2550 KiB  
Article
Hexagonal-Shaped Spin Crossover Nanoparticles Studied by Ising-Like Model Solved by Local Mean Field Approximation
by Catherine Cazelles, Jorge Linares, Mamadou Ndiaye, Pierre-Richard Dahoo and Kamel Boukheddaden
Magnetochemistry 2021, 7(5), 69; https://doi.org/10.3390/magnetochemistry7050069 - 17 May 2021
Cited by 1 | Viewed by 2414
Abstract
The properties of spin crossover (SCO) nanoparticles were studied for five 2D hexagonal lattice structures of increasing sizes embedded in a matrix, thus affecting the thermal properties of the SCO region. These effects were modeled using the Ising-like model in the framework of [...] Read more.
The properties of spin crossover (SCO) nanoparticles were studied for five 2D hexagonal lattice structures of increasing sizes embedded in a matrix, thus affecting the thermal properties of the SCO region. These effects were modeled using the Ising-like model in the framework of local mean field approximation (LMFA). The systematic combined effect of the different types of couplings, consisting of (i) bulk short- and long-range interactions and (ii) edge and corner interactions at the surface mediated by the matrix environment, were investigated by using parameter values typical of SCO complexes. Gradual two and three hysteretic transition curves from the LS to HS states were obtained. The results were interpreted in terms of the competition between the structure-dependent order and disorder temperatures (TO.D.) of internal coupling origin and the ligand field-dependent equilibrium temperatures (Teq) of external origin. Full article
(This article belongs to the Special Issue Characterization of Spin Crossover Compounds)
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