0000000001299590
AUTHOR
Mykhaylo Ozerov
showing 8 related works from this author
Spectroscopic analysis of vibronic relaxation pathways in molecular spin qubit [Ho(W5O18)2]9−: sparse spectra are key
2021
Molecular vibrations play a key role in magnetic relaxation processes of molecular spin qubits as they couple to spin states, leading to the loss of quantum information. Direct experimental determination of vibronic coupling is crucial to understand and control the spin dynamics of these nano-objects, which represent the limit of miniaturization for quantum devices. Herein, we measure the vibrational properties of the molecular spin qubit $[$Ho(W$_5$O$_{18}$)$_2]^{9-}$ by means of magneto-infrared spectroscopy. Our results allow us to unravel the vibrational decoherence pathways in combination with $ab$ $initio$ calculations including vibronic coupling. We observe field-induced spectral cha…
Coligand Effects on the Field-Induced Double Slow Magnetic Relaxation in Six-Coordinate Cobalt(II) Single-Ion Magnets (SIMs) with Positive Magnetic A…
2019
Two mononuclear cobalt(II) compounds of formula [Co(dmphen)2(OOCPh)]ClO4·1/2H2O·1/2CH3OH (1) and [Co(dmbipy)2(OOCPh)]ClO4 (2) (dmphen = 2,9-dimethyl-1,10-phenanthroline, dmbipy = 6,6'-dimethyl-2,2'-bipyridine and HOOCPh = benzoic acid) are prepared and magnetostructurally investigated. Each cobalt(II) ion is six-coordinate with a distorted octahedral CoN4O2 environment. The complex cations are interlinked leading to supramolecular chains (1) and pairs (2) that grow along the crystallographic c-axis with racemic mixtures of (Δ,Λ)-Co units. FIRMS allowed us to directly measure the zero-field splitting between the two lowest Kramers doublets, which led to axial anisotropy values of 58.3 cm-1 ≤…
Purely Spectroscopic Determination of the Spin Hamiltonian Parameters in High-Spin Six-Coordinated Cobalt(II) Complexes with Large Zero-Field Splitti…
2019
Accurate determination of the spin Hamiltonian parameters in transition-metal complexes with large zero-field splitting (ZFS) is an actual challenge in studying magnetic and spectroscopic properties of high-spin transition metal complexes. Recent critical papers have convincingly shown that previous determinations of these parameters, based only on the magnetic data, have low accuracy and reliability. A combination of X-band electron paramagnetic resonance (EPR) spectroscopy and SQUID magnetometry seems to be a more convincing and accurate approach. However, even in this case, the accuracy of the determination of the spin Hamiltonian parameters is strongly limited. In this work, we propose …
.Single-Ion Magnetic Behaviour in an Iron(III) Porphyrin Complex: A Dichotomy Between High Spin and 5/2-3/2 Spin Admixture
2020
International audience; A mononuclear iron(III) porphyrin compound exhibiting unexpectedly slow magnetic relaxation, which is a characteristic of single-ion magnet behaviour, is reported. This behaviour originates from the close proximity (approximate to 550 cm(-1)) of the intermediate-spinS=3/2 excited states to the high-spinS=5/2 ground state. More quantitatively, although the ground state is mostlyS=5/2, a spin-admixture model evidences a sizable contribution (approximate to 15 %) ofS=3/2 to the ground state, which as a consequence experiences large and positive axial anisotropy (D=+19.2 cm(-1)). Frequency-domain EPR spectroscopy allowed them(S)= |+/- 1/2⟩->|+/- 3/2&Rig…
CCDC 1914220: Experimental Crystal Structure Determination
2019
Related Article: Julia Vallejo, Marta Viciano-Chumillas, Francisco Lloret, Miguel Julve, Isabel Castro, J. Krzystek, Mykhaylo Ozerov, Donatella Armentano, Giovanni De Munno, Joan Cano|2019|Inorg.Chem.|58|15726|doi:10.1021/acs.inorgchem.9b01719
CCDC 1911055: Experimental Crystal Structure Determination
2019
Related Article: Eugenii Ya. Misochko, Alexander V. Akimov, Denis V. Korchagin, Joscha Nehrkorn, Mykhaylo Ozerov, Andrew V. Palii, Juan Modesto Clemente-Juan, Sergey M. Aldoshin|2019|Inorg.Chem.|58|16434|doi:10.1021/acs.inorgchem.9b02195
CCDC 1872265: Experimental Crystal Structure Determination
2020
Related Article: Marta Viciano-Chumillas, Geneviève Blondin, Martin Clémancey, Jurek Krzystek, Mykhaylo Ozerov, Donatella Armentano, Alexander Schnegg, Thomas Lohmiller, Joshua Telser, Francesc Lloret, Joan Cano|2020|Chem.-Eur.J.|26|14242|doi:10.1002/chem.202003052
CCDC 1914219: Experimental Crystal Structure Determination
2019
Related Article: Julia Vallejo, Marta Viciano-Chumillas, Francisco Lloret, Miguel Julve, Isabel Castro, J. Krzystek, Mykhaylo Ozerov, Donatella Armentano, Giovanni De Munno, Joan Cano|2019|Inorg.Chem.|58|15726|doi:10.1021/acs.inorgchem.9b01719