Novel double-decker phthalocyaninato terbium(iii) single molecule magnets with stabilised redox states

2012 ◽  
Vol 41 (44) ◽  
pp. 13632 ◽  
Author(s):  
Mathieu Gonidec ◽  
David B. Amabilino ◽  
Jaume Veciana
Keyword(s):  
Single Molecule ◽  
Single Molecule Magnets ◽  
Redox States ◽  
Double Decker

scholarly journals Coadsorption of TbIII–Porphyrin Double-decker Single-molecule Magnets in a Porous Molecular Network: Toward Controlled Alignment of Single-molecule Magnets on a Carbon Surface

2016 ◽  
Vol 45 (3) ◽  
pp. 286-288 ◽  
Author(s):  
Tomoko Inose ◽  
Daisuke Tanaka ◽  
Oleksandr Ivasenko ◽  
Kazukuni Tahara ◽  
Steven De Feyter ◽  
...  
Keyword(s):  
Single Molecule ◽  
Molecular Network ◽  
Carbon Surface ◽  
Single Molecule Magnets ◽  
Double Decker

scholarly journals Bilayer of Terbium Double-Decker Single-Molecule Magnets

2016 ◽  
Vol 120 (25) ◽  
pp. 13581-13586 ◽  
Author(s):  
Giulia Serrano ◽  
Stefan Wiespointner-Baumgarthuber ◽  
Stefano Tebi ◽  
Svetlana Klyatskaya ◽  
Mario Ruben ◽  
...  
Keyword(s):  
Single Molecule ◽  
Single Molecule Magnets ◽  
Double Decker

scholarly journals Role of π-Radicals in the Spin Connectivity of Clusters and Networks of Tb Double-Decker Single Molecule Magnets

ACS Nano ◽  
2017 ◽  
Vol 11 (11) ◽  
pp. 10750-10760 ◽  
Author(s):  
Anis Amokrane ◽  
Svetlana Klyatskaya ◽  
Mauro Boero ◽  
Mario Ruben ◽  
Jean-Pierre Bucher
Keyword(s):  
Single Molecule ◽  
Single Molecule Magnets ◽  
Double Decker

Correction to Highly Reduced Double-Decker Single-Molecule Magnets Exhibiting Slow Magnetic Relaxation

2013 ◽  
Vol 52 (20) ◽  
pp. 12179-12179 ◽  
Author(s):  
Mathieu Gonidec ◽  
Itana Krivokapic ◽  
Jose Vidal-Gancedo ◽  
E. Stephen Davies ◽  
Jonathan McMaster ◽  
...  
Keyword(s):  
Single Molecule ◽  
Magnetic Relaxation ◽  
Single Molecule Magnets ◽  
Double Decker ◽  
Slow Magnetic Relaxation

Highly Reduced Double-Decker Single-Molecule Magnets Exhibiting Slow Magnetic Relaxation

2013 ◽  
Vol 52 (8) ◽  
pp. 4464-4471 ◽  
Author(s):  
Mathieu Gonidec ◽  
Itana Krivokapic ◽  
Jose Vidal-Gancedo ◽  
E. Stephen Davies ◽  
Jonathan McMaster ◽  
...  
Keyword(s):  
Single Molecule ◽  
Magnetic Relaxation ◽  
Single Molecule Magnets ◽  
Double Decker ◽  
Slow Magnetic Relaxation

Structural, magnetic and theoretical analyses of anionic and cationic phthalocyaninato-terbium(III) double-decker complexes: Magnetic relaxation via higher ligand-field sublevels enhanced by oxidation

2021 ◽  
Author(s):  
Yoji Horii ◽  
Marko Damjanovic ◽  
Keiichi Katoh ◽  
Masahiro Yamashita
Keyword(s):  
Single Molecule ◽  
Magnetic Relaxation ◽  
Magnetic Hysteresis ◽  
Ligand Field ◽  
Single Molecule Magnets ◽  
Charged Species ◽  
Double Decker ◽  
Crystal Structural ◽  
Theoretical Analyses

Crystal structural and magnetic analyses were performed for anionic (1−) and cationic (1+) form of phthalocyaninato-Tb3+ double-decker single-molecule magnets (SMMs). Both charged species showed slow magnetic relaxations and magnetic hysteresis...

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>

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