The role of anharmonicity in the systems with spin crossover

2016 ◽  
Vol 42 (6) ◽  
pp. 505-512 ◽  
Author(s):  
V. V. Shelest ◽  
A. V. Khristov ◽  
G. G. Levchenko
Keyword(s):  
Spin Crossover

scholarly journals Interplay of Jahn-Teller Ordering and Spin Crossover in Co(II) Compounds

2020 ◽  
Vol 6 (4) ◽  
pp. 62
Author(s):  
Sophia Klokishner ◽  
Serghei M. Ostrovsky
Keyword(s):  
Experimental Data ◽  
Magnetic Susceptibility ◽  
Temperature Dependence ◽  
Theoretical Approach ◽  
Spin Crossover ◽  
Qualitative And Quantitative ◽  
Jahn Teller ◽  
Quantitative Explanation ◽  
Interionic Interactions

The spin crossover phenomena in Co(II) compounds are in the focus of the present paper. A microscopic theoretical approach for the description of spin transitions in mononuclear Co(II) compounds is suggested. Within the framework of this approach there are taken into account two types of interionic interactions that may be operative in the problem such as the electron-deformational interaction and the cooperative Jahn-Teller interaction arising from the coupling of the low-spin state of the Co(II) ion with the tetragonal vibrations of the nearest surrounding. The different role of these interactions in the spin transformation is demonstrated and discussed. On the basis of developed approach a qualitative and quantitative explanation of the experimental data on the temperature dependence of the magnetic susceptibility for the [Co(pyterpy)2](PF6)2, [Co(pyterpy)2](TCNQ)2⋅DMF⋅MeOH and [Co(pyterpy)2](TCNQ)2⋅MeCN⋅MeOH compounds is given.

Role of open boundary conditions on the hysteretic behaviour of one-dimensional spin crossover nanoparticles

2014 ◽  
Vol 115 (19) ◽  
pp. 194309 ◽  
Author(s):  
Daniel Chiruta ◽  
Jorge Linares ◽  
Seiji Miyashita ◽  
Kamel Boukheddaden
Keyword(s):  
Boundary Conditions ◽  
Spin Crossover ◽  
Open Boundary ◽  
Open Boundary Conditions ◽  
Hysteretic Behaviour ◽  
One Dimensional

Investigation of surface energies in spin crossover nanomaterials: the role of surface relaxations

2017 ◽  
Vol 19 (19) ◽  
pp. 12276-12281 ◽  
Author(s):  
Mirko Mikolasek ◽  
William Nicolazzi ◽  
Férial Terki ◽  
Gábor Molnár ◽  
Azzedine Bousseksou
Keyword(s):  
Spin Crossover ◽  
Spin Transition ◽  
Mean Field ◽  
Transition Phenomenon ◽  
Field Approach ◽  
Surface Energies

We analyse in detail the role of surface relaxations on the spin transition phenomenon through an Ising-like model solved in the inhomogeneous mean field approach.

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