scholarly journals Front Cover: Decorated Tetrathiafulvalene-Based Ligands: Powerful Chemical Tools for the Design of Single-Molecule Magnets (Eur. J. Inorg. Chem. 2/2020)

2020 ◽  
Vol 2020 (2) ◽  
pp. 146-146
Author(s):  
Olivier Cador ◽  
Boris Le Guennic ◽  
Lahcène Ouahab ◽  
Fabrice Pointillart
Keyword(s):  
Single Molecule ◽  
Single Molecule Magnets ◽  
Front Cover ◽  
Chemical Tools

Decorated Tetrathiafulvalene-Based Ligands: Powerful Chemical Tools for the Design of Single-Molecule Magnets

2019 ◽  
Vol 2020 (2) ◽  
pp. 148-164 ◽  
Author(s):  
Olivier Cador ◽  
Boris Le Guennic ◽  
Lahcène Ouahab ◽  
Fabrice Pointillart
Keyword(s):  
Single Molecule ◽  
Single Molecule Magnets ◽  
Chemical Tools

Decorated Tetrathiafulvalene-Based Ligands: Powerful Chemical Tools for the Design of Single-Molecule Magnets

2020 ◽  
Vol 2020 (2) ◽  
pp. 147-147
Author(s):  
Olivier Cador ◽  
Boris Le Guennic ◽  
Lahcène Ouahab ◽  
Fabrice Pointillart
Keyword(s):  
Single Molecule ◽  
Single Molecule Magnets ◽  
Chemical Tools

scholarly journals Front Cover: Trinuclear Complexes Derived from R/S Schiff Bases - Chiral Single-Molecule Magnets (Eur. J. Inorg. Chem. 6/2017)

2017 ◽  
Vol 2017 (6) ◽  
pp. 989-989
Author(s):  
Albert Escuer ◽  
Julia Mayans ◽  
Merce Font-Bardia ◽  
Lorenzo Di Bari ◽  
Marcin Górecki
Keyword(s):  
Schiff Bases ◽  
Single Molecule ◽  
Single Molecule Magnets ◽  
Front Cover ◽  
Trinuclear Complexes

scholarly journals Front Cover: Mapping the Magnetic Anisotropy at the Atomic Scale in Dysprosium Single-Molecule Magnets (Chem. Eur. J. 62/2018)

2018 ◽  
Vol 24 (62) ◽  
pp. 16452-16452
Author(s):  
Emil A. Klahn ◽  
Chen Gao ◽  
Beatrice Gillon ◽  
Arsen Gukasov ◽  
Xavier Fabrèges ◽  
...  
Keyword(s):  
Magnetic Anisotropy ◽  
Single Molecule ◽  
Atomic Scale ◽  
Single Molecule Magnets ◽  
Front Cover

scholarly journals Front Cover: Probing Magnetic Excitations in CoII Single-Molecule Magnets by Inelastic Neutron Scattering (Eur. J. Inorg. Chem. 8/2019)

2019 ◽  
Vol 2019 (8) ◽  
pp. 1054-1054
Author(s):  
Shelby E. Stavretis ◽  
Yongqiang Cheng ◽  
Luke L. Daemen ◽  
Craig M. Brown ◽  
Duncan H. Moseley ◽  
...  
Keyword(s):  
Neutron Scattering ◽  
Single Molecule ◽  
Inelastic Neutron Scattering ◽  
Inelastic Neutron ◽  
Single Molecule Magnets ◽  
Magnetic Excitations ◽  
Front Cover

Seeking Magneto-Structural Correlations in Easily Tailored Pentagonal Bipyramid Dy(III) Single-Ion Magnets

2019 ◽  
Author(s):  
Guo-Zhang Huang ◽  
Ze-Yu Ruan ◽  
Jie-Yu Zheng ◽  
Yan-Cong Chen ◽  
Si-Guo Wu ◽  
...  
Keyword(s):  
Single Molecule ◽  
Structural Engineering ◽  
Magnetic Hysteresis ◽  
Sweep Rate ◽  
Coordination Bond ◽  
Pentagonal Bipyramid ◽  
Single Molecule Magnets ◽  
Crystal Field Theory ◽  
Bond Angles ◽  
Axial Coordination

<p><a></a>Controlling molecular magnetic anisotropy via structural engineering is delicate and fascinating, especially for single-molecule magnets (SMMs). Herein a family of dysprosium single-ion magnets (SIMs) sitting in pentagonal bipyramid geometry have been synthesized with the variable-size terminal ligands and counter anions, through which the subtle coordination geometry of Dy(III) can be finely tuned based on the size effect. The effective energy barrier (Ueff) successfully increases from 439 K to 632 K and the magnetic hysteresis temperature (under a 200 Oe/s sweep rate) raises from 11 K to 24 K. Based on the crystal-field theory, a semi-quantitative magneto-structural correlation deducing experimentally for the first time is revealed that the Ueff is linearly proportional to the structural-related value S2<sup>0</sup> corresponding to the axial coordination bond lengths and the bond angles. Through the evaluation of the remanent magnetization from hysteresis, quantum tunneling of magnetization (QTM) is found to exhibit negative correlation with the structural-related value S<sub>tun</sub> corresponding to the axial coordination bond angles.<br></p>

Correlating Blocking Temperatures in Single Molecule Magnets with Raman Relaxation

2018 ◽  
Author(s):  
Marcus J. Giansiracusa ◽  
Andreas Kostopoulos ◽  
George F. S. Whitehead ◽  
David Collison ◽  
Floriana Tuna ◽  
...  
Keyword(s):  
Relaxation Time ◽  
Single Molecule ◽  
Energy Barrier ◽  
Thermal Relaxation ◽  
Relaxation Mechanism ◽  
Blocking Temperature ◽  
Single Molecule Magnets ◽  
Single Molecule Magnet ◽  
Key Parameter

We report a six coordinate DyIII single-molecule magnet<br>(SMM) with an energy barrier of 1110 K for thermal relaxation of<br>magnetization. The sample shows no retention of magnetization<br>even at 2 K and this led us to find a good correlation between the<br>blocking temperature and the Raman relaxation regime for SMMs.<br>The key parameter is the relaxation time (𝜏<sub>switch</sub>) at the point where<br>the Raman relaxation mechanism becomes more important than<br>Orbach.

A Combined Spin-Flip and IP/EA Approach for Handling Spin and Spatial Degeneracies: Application to Double Exchange Systems

2018 ◽  
Author(s):  
Shannon Houck ◽  
Nicholas Mayhall
Keyword(s):  
Single Molecule ◽  
Double Exchange ◽  
Computational Effort ◽  
Strongly Correlated ◽  
Single Molecule Magnets ◽  
New Approach ◽  
Spin Flip ◽  
Model Hamiltonian ◽  
Simultaneous Existence ◽  
Exchange Parameters

<div>Many multiconfigurational systems, such as single-molecule magnets, are difficult to study using traditional computational methods due to the simultaneous existence of both spin and spatial degeneracies. In this work, a new approach termed n-spin-flip Ionization Potential/Electron Affinity (<i>n</i>SF-IP or <i>n</i>SF-EA) is introduced which combines the spin-flip method of Anna Krylov with particle-number changing IP/EA methods. We demonstrate the efficacy of the approach by applying it to the strongly-correlated N<sub>2</sub><sup>+</sup> as well as several double exchange systems. We also demonstrate that when these systems are well-described by a double exchange model Hamiltonian, only 1SF-IP/EA is required to extract the double exchange parameters and accurately predict energies for the low-spin states. This significantly reduces the computational effort for studying such systems. The effects of including additional excitations (using a RAS-<i>n</i>SF-IP/EA scheme) are also examined, with particular emphasis on hole and particle excitations.</div>

A Combined Spin-Flip and IP/EA Approach for Handling Spin and Spatial Degeneracies: Application to Double Exchange Systems

2018 ◽  
Author(s):  
Shannon Houck ◽  
Nicholas Mayhall
Keyword(s):  
Single Molecule ◽  
Double Exchange ◽  
Computational Effort ◽  
Strongly Correlated ◽  
Single Molecule Magnets ◽  
New Approach ◽  
Spin Flip ◽  
Model Hamiltonian ◽  
Simultaneous Existence ◽  
Exchange Parameters

<div>Many multiconfigurational systems, such as single-molecule magnets, are difficult to study using traditional computational methods due to the simultaneous existence of both spin and spatial degeneracies. In this work, a new approach termed n-spin-flip Ionization Potential/Electron Affinity (<i>n</i>SF-IP or <i>n</i>SF-EA) is introduced which combines the spin-flip method of Anna Krylov with particle-number changing IP/EA methods. We demonstrate the efficacy of the approach by applying it to the strongly-correlated N<sub>2</sub><sup>+</sup> as well as several double exchange systems. We also demonstrate that when these systems are well-described by a double exchange model Hamiltonian, only 1SF-IP/EA is required to extract the double exchange parameters and accurately predict energies for the low-spin states. This significantly reduces the computational effort for studying such systems. The effects of including additional excitations (using a RAS-<i>n</i>SF-IP/EA scheme) are also examined, with particular emphasis on hole and particle excitations.</div>

Hydrazone-based Dysprosium Single Molecule Magnets

2013 ◽  
Vol 3 (2) ◽  
pp. 101-111 ◽  
Author(s):  
Peng Zhang ◽  
Li Zhang ◽  
Jinkui Tang
Keyword(s):  
Single Molecule ◽  
Single Molecule Magnets
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