Monitoring Spin-Crossover Properties by Diffused Reflectivity

In this work we present a detailed study showing the importance of the Kubelka-Munk (KM) correction in the analysis of diffuse reflectivity measurements to characterize spin crossover compounds. Combined reflectance and magnetic susceptibility measurements are carried out as a function of temperature or time to highlight the conditions under which this correction becomes critical. In particular, we investigate the influence of the color contrast between the two spin states on the reflectance measurements. Interestingly, the samples’ contrast seems to play an important role on the spin-like domain structure as suggested by the symmetry of the FORC diagrams. These latest results are discussed within the framework of Classical Preisach model (CPM).

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Interplay between spin crossover and exchange interaction in iron(III) complexes

Pure and Applied Chemistry ◽

10.1351/pac-con-08-07-20 ◽

2009 ◽

Vol 81 (8) ◽

pp. 1357-1383 ◽

Cited By ~ 26

Author(s):

Roman Boča ◽

Ivan Nemec ◽

Ivan Šalitroš ◽

Ján Pavlik ◽

Radovan Herchel ◽

...

Keyword(s):

Experimental Data ◽

Magnetic Susceptibility ◽

Exchange Interaction ◽

Spin Crossover ◽

Magnetic Measurements ◽

Spin States ◽

Magnetic Exchange Interaction ◽

Magnetic Exchange ◽

Simultaneous Fitting ◽

Polynuclear Metal Complexes

In the dinuclear and polynuclear metal complexes exhibiting the low-spin (LS) to high-spin (HS) transition, the spin-crossover phenomenon interferes with the magnetic exchange interaction. The latter manifests itself in forming spin-multiplets, which causes a possible overlap of the band originating in different reference spin states (LL, LH, HL, and HH). A series of dinuclear Fe(III) complexes has been prepared; the iron centers are linked by a bidentate bridge (CN-, and diamagnetic metallacyanates {Fe(CN)5(NO)}, {Ni(CN)4}, {Pt(CN)4}, and {Ag(CN)2}). Magnetic measurements confirm that the spin crossover proceeds on the thermal propagation. This information has been completed also by the Mössbauer spectral (MS) data. A theoretical model has been developed that allows a simultaneous fitting of all available experimental data (magnetic susceptibility, magnetization, HS mole fraction) on a common set of parameters.

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Ferromagnetic resonance, magnetic susceptibility, and transformation of domain structure in CoFeB film with growth induced anisotropy

Journal of Applied Physics ◽

10.1063/1.3559732 ◽

2011 ◽

Vol 109 (8) ◽

pp. 083926 ◽

Cited By ~ 14

Author(s):

S. A. Manuilov ◽

A. M. Grishin ◽

M. Munakata

Keyword(s):

Magnetic Susceptibility ◽

Domain Structure ◽

Ferromagnetic Resonance ◽

Induced Anisotropy

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Tuning a Single Ligand System to Stabilize Multiple Spin States of Manganese: A First Example of a Hydrazone-Based Manganese(III) Spin-Crossover Complex

Chemistry - A European Journal ◽

10.1002/chem.201402634 ◽

2014 ◽

Vol 20 (31) ◽

pp. 9693-9701 ◽

Cited By ~ 15

Author(s):

Musa S. Shongwe ◽

Kaltham S. Al-Barhi ◽

Masahiro Mikuriya ◽

Harry Adams ◽

Michael J. Morris ◽

...

Keyword(s):

Spin Crossover ◽

Spin States ◽

Ligand System

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Spin Crossover between the High-Spin and Low-Spin States and Dielectric Switching in the Ionic Crystals of a Fe(II) [2 × 2] Molecular Grid

Bulletin of the Chemical Society of Japan ◽

10.1246/bcsj.20200207 ◽

2020 ◽

Vol 93 (12) ◽

pp. 1583-1587

Author(s):

Yuta Uezu ◽

Ryo Tsunashima ◽

Chiaki Tanaka ◽

Masaru Fujibayashi ◽

Jun Manabe ◽

...

Keyword(s):

High Spin ◽

Spin Crossover ◽

Spin States ◽

Ionic Crystals

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How can [MoIV(CN)6]2−, an apparently octahedral (d)2complex, be diamagnetic? Insights from quantum chemical calculations and magnetic susceptibility measurements

Physical Chemistry Chemical Physics ◽

10.1039/c4cp04863f ◽

2015 ◽

Vol 17 (22) ◽

pp. 14890-14902 ◽

Cited By ~ 8

Author(s):

Mariusz Radoń ◽

Paweł Rejmak ◽

Magdalena Fitta ◽

Maria Bałanda ◽

Janusz Szklarzewicz

Keyword(s):

Magnetic Susceptibility ◽

Quantum Chemical Calculations ◽

Quantum Chemical ◽

Spin States ◽

Trigonal Prismatic

[Mo(CN)6]2−is computationally predicted to be a trigonal prismatic complex with closely-lying singlet (S= 0) and triplet (S= 1) spin states.

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The Electronic Spectra of Hg–In Alloys

Canadian Journal of Physics ◽

10.1139/p73-121 ◽

1973 ◽

Vol 51 (9) ◽

pp. 894-913 ◽

Cited By ~ 5

Author(s):

Barry Siskind ◽

James Boiani ◽

Stuart A. Rice

Keyword(s):

Magnetic Susceptibility ◽

Optical Properties ◽

Density Of States ◽

Normal Incidence ◽

Electron Excitation ◽

Concentration Gradients ◽

Magnetic Susceptibility Data ◽

Long Wavelength ◽

Susceptibility Data ◽

Reflectance Measurements

We have made reflectance measurements on liquid Hg–In alloys at near-normal incidence from 0.14 to 4.0 μm. After describing our apparatus, the experimental results, and the treatment of our data we make the following interpretations:(a) that the peak in ε2 at about 8.5 eV consists of a superposition of a d-electron excitation and a plasma (or Hopfield) resonance;(b) that the peak in ε2 at about 5.8 eV is associated with a peak in the density of states and is a consequence of a scattering resonance in the In ion-core pseudopotential;(c) that concentration gradients and a diffuse transition zone at the surface of the liquid alloy may have a significant effect on the optical properties, not only in ellipsometric experiments but also in reflectance experiments;(d) that an excess reflectance which we find at our long-wavelength limit can be explained in terms of an anomalously large density of states at the Fermi level and that this is consistent with available Hall coefficient and magnetic susceptibility data.

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