Bias induced spin transitions of spin crossover molecules: the role of charging effect

2017 ◽  
Vol 19 (11) ◽  
pp. 7652-7658 ◽  
Author(s):  
Hua Hao ◽  
Ting Jia ◽  
Xiaohong Zheng ◽  
Zhi Zeng
Keyword(s):  
High Spin ◽  
Spin Crossover ◽  
Spin Transition ◽  
Charging Effect ◽  
Spin Transitions

A new mechanism is proposed to understand the recently observed spin transition of spin crossover molecules from low spin to high spin under bias voltages and it is closely related to one additional electron on the spin crossover molecules.

Structural, magnetic and Mössbauer spectroscopic studies of the [Fe(3-bpp)2](CF3COO)2 complex: role of crystal packing leading to an incomplete Fe(ii) high spin ⇋ low spin transition

CrystEngComm ◽  
2021 ◽  
Vol 23 (15) ◽  
pp. 2854-2861
Author(s):  
Kristian Handoyo Sugiyarto ◽  
Djulia Onggo ◽  
Hiroki Akutsu ◽  
Varimalla Raghavendra Reddy ◽  
Hari Sutrisno ◽  
...  
Keyword(s):  
High Spin ◽  
Crystal Packing ◽  
Spin Transition ◽  
Spectroscopic Studies ◽  
Mononuclear Complex

Mononuclear complex [Fe(3-bpp)2](CF3COO)2 exhibits a thermal (HS + HS) ⇋ (HS + LS) transition at ∼226 K which is not associated with any crystallographic transition.

scholarly journals Electrical read-out of light-induced spin transition in thin film spin crossover/graphene heterostructures

2021 ◽  
Author(s):  
Nikita Konstantinov ◽  
Arthur Tauzin ◽  
Ulrich Nguetchuissi Noumbé ◽  
Diana Dragoe ◽  
Bohdan Kundys ◽  
...  
Keyword(s):  
Thin Film ◽  
Spin Crossover ◽  
Spin Transition ◽  
Switching Device ◽  
Electronic Switching ◽  
Spin Transitions

An opto-electronic switching device made from an evaporated spin crossover thin film over a graphene sensor is presented. The electrical transduction of both temperature and light-induced reversible spin transitions are demonstrated.

Optical Microscopy Imaging of the Thermally-Induced Spin Transition and Isothermal Multi-stepped Relaxation in a Low-Spin Stabilized Spin-Crossover Material

2021 ◽  
Author(s):  
Pradip Chakraborty ◽  
Mouhamadou Sy ◽  
Houcem Fourati ◽  
Maria Teresa Delgado Pérez ◽  
Mousumi Dutta ◽  
...  
Keyword(s):  
Optical Microscopy ◽  
High Spin ◽  
Spin Relaxation ◽  
Spin Crossover ◽  
Spin Transition ◽  
Host Lattice ◽  
Microscopy Imaging ◽  
Thermally Induced ◽  
Optical Microscopy Imaging

The thermal spin transition and the photo-induced high-spin → low-spin relaxation of the prototypical [Fe(ptz)6](BF4)2 spin-crossover compound (ptz = 1-propyltetrazole) diluted in the isostructural ruthenium host lattice [Ru(ptz)6](BF4)2, which stabilizes...

Demonstration of the thermally induced high spin–low spin transition for a transparent spin crossover complex film [Fe(II)(H-trz)3]-Nafion (trz=triazole)

Polyhedron ◽  
2005 ◽  
Vol 24 (16-17) ◽  
pp. 2909-2912 ◽  
Author(s):  
Akio Nakamoto ◽  
Norimichi Kojima ◽  
Liu XiaoJun ◽  
Yutaka Moritomo ◽  
Arao Nakamura
Keyword(s):  
High Spin ◽  
Spin Crossover ◽  
Spin Transition ◽  
Thermally Induced ◽  
Complex Film

scholarly journals Structure:function relationships for thermal and light-induced spin-crossover in isomorphous molecular materials

2020 ◽  
Vol 8 (25) ◽  
pp. 8420-8429
Author(s):  
Rafal Kulmaczewski ◽  
Elzbieta Trzop ◽  
Eric Collet ◽  
Sergi Vela ◽  
Malcolm A. Halcrow
Keyword(s):  
High Spin ◽  
Spin State ◽  
Spin Crossover ◽  
Spin Transition ◽  
Molecular Materials

The complicated light-induced spin state trapping behaviour of a family of isomorphous solvate crystals reflects reorientation of the lattice solvent during the spin-transition (white = high-spin, brown = low-spin).

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.

[CoII(phimpy)2](ClO4)2and [CoII(ipimpy)2](ClO4)2: New Cobalt(II) Spin Crossover Compounds, and the Role of the Ligand Flexibility in Spin Transition Behavior

2003 ◽  
Vol 32 (10) ◽  
pp. 882-883 ◽  
Author(s):  
Gergely Juhász ◽  
Shinya Hayami ◽  
Katsuya Inoue ◽  
Yonezo Maeda
Keyword(s):  
Spin Crossover ◽  
Spin Transition ◽  
Transition Behavior

scholarly journals Elastic Origin of the Unsymmetrical Thermal Hysteresis in Spin Crossover Materials: Evidence of Symmetry Breaking

Symmetry ◽  
2021 ◽  
Vol 13 (5) ◽  
pp. 828
Author(s):  
Mamadou Ndiaye ◽  
Nour El Islam Belmouri ◽  
Jorge Linares ◽  
Kamel Boukheddaden
Keyword(s):  
Symmetry Breaking ◽  
High Spin ◽  
Spin Crossover ◽  
Thermal Hysteresis ◽  
Spin Transition ◽  
Hysteresis Loops ◽  
Point Of View ◽  
Self Organization ◽  
Spin States ◽  
Heating And Cooling

The jungle of experimental behaviors of spin-crossover materials contains a tremendous number of unexpected behaviors, among which, the unsymmetrical hysteresis loops having different shapes on heating and cooling, that we often encounter in literature. Excluding an extra effect of crystallographic phase transitions, we study here these phenomena from the point of view of elastic modeling and we demonstrate that a simple model accounting for the bond lengths misfits between the high-spin and low-spin states is sufficient to describe the situation of unsymmetrical hysteresis showing plateaus at the transition only on cooling or on heating branches. The idea behind this effect relates to the existence of a discriminant elastic frustration in the lattice, which expresses only along the high-spin to low-spin transition or in the opposite side. The obtained two-step transitions showed characteristics of self-organization of the spin states under the form of stripes, which we explain as an emergence process of antagonist directional elastic interactions inside the lattice. The analysis of the spin state transformation inside the plateau on cooling in terms of two sublattices demonstrated that the elastic-driven self-organization of the spin states is accompanied with a symmetry breaking.

Photo-induced spin-transition: the role of the iron(II) environment distortion

2005 ◽  
Vol 61 (1) ◽  
pp. 25-28 ◽  
Author(s):  
Mathieu Marchivie ◽  
Philippe Guionneau ◽  
Jean-François Létard ◽  
Daniel Chasseau
Keyword(s):  
Spin Crossover ◽  
Strong Dependence ◽  
Spin Transition ◽  
Magnetic Behaviour ◽  
Magnetic Data ◽  
Structural Parameter ◽  
Structure Property ◽  
Wide Range ◽  
Shed Light

The [FeL n (NCS)2] iron(II) spin-crossover complexes cover a wide range of magnetic behaviour. Owing to the large number of known structural and magnetic data, this series is perfectly adapted to the investigation of the structure–magnetic properties relationship. In this paper we propose a new structural parameter, denoted Θ, which is used to correlate the features of the spin-crossover phenomena with the distortion of the iron environment. In particular, this parameter has shed light on the role of such distortion on the limiting temperature of photo-inscription, known as T(LIESST). A strong dependence of T(LIESST) on Θ is clearly demonstrated. The stronger the distortion the higher the T(LIESST) value. This structure–property dependence represents, for instance, a powerful tool to estimate the highest potential T(LIESST) value for a series of complexes. This limit in the [FeL n (NCS)2] series is estimated to be around 120 K, which probably prevents their use in any industrial application.

The [Fe(etz)6](BF4)2 Spin-Crossover System—Part One: High-Spin ⇌ Low-Spin Transition in Two Lattice Sites

1996 ◽  
Vol 2 (11) ◽  
pp. 1427-1434 ◽  
Author(s):  
Andreas Hauser ◽  
Philipp Gütlich ◽  
Roland Hinek ◽  
Hartmut Spiering ◽  
Dieter Schollmeyer
Keyword(s):  
High Spin ◽  
Spin Crossover ◽  
Spin Transition ◽  
System Part
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