A High Anisotropy Barrier in a Sulfur-Bridged Organodysprosium Single-Molecule Magnet

2012 ◽  
Vol 124 (28) ◽  
pp. 7082-7086 ◽  
Author(s):  
Floriana Tuna ◽  
Charlene A. Smith ◽  
Michael Bodensteiner ◽  
Liviu Ungur ◽  
Liviu F. Chibotaru ◽  
...  
Keyword(s):  
Single Molecule ◽  
Single Molecule Magnet ◽  
High Anisotropy

scholarly journals A Low-Symmetry Dysprosium Metallocene Single-Molecule Magnet with a High Anisotropy Barrier

2016 ◽  
Vol 128 (37) ◽  
pp. 11248-11251 ◽  
Author(s):  
Thomas Pugh ◽  
Nicholas F. Chilton ◽  
Richard A. Layfield
Keyword(s):  
Single Molecule ◽  
Single Molecule Magnet ◽  
High Anisotropy ◽  
Low Symmetry

Linking high anisotropy Dy3 triangles to create a Dy6 single-molecule magnet

2009 ◽  
pp. 1100 ◽  
Author(s):  
Bashir Hussain ◽  
Didier Savard ◽  
Tara J. Burchell ◽  
Wolfgang Wernsdorfer ◽  
Muralee Murugesu
Keyword(s):  
Single Molecule ◽  
Single Molecule Magnet ◽  
High Anisotropy

A High Anisotropy Barrier in a Sulfur-Bridged Organodysprosium Single-Molecule Magnet

2012 ◽  
Vol 51 (28) ◽  
pp. 6976-6980 ◽  
Author(s):  
Floriana Tuna ◽  
Charlene A. Smith ◽  
Michael Bodensteiner ◽  
Liviu Ungur ◽  
Liviu F. Chibotaru ◽  
...  
Keyword(s):  
Single Molecule ◽  
Single Molecule Magnet ◽  
High Anisotropy

scholarly journals A Low-Symmetry Dysprosium Metallocene Single-Molecule Magnet with a High Anisotropy Barrier

2016 ◽  
Vol 55 (37) ◽  
pp. 11082-11085 ◽  
Author(s):  
Thomas Pugh ◽  
Nicholas F. Chilton ◽  
Richard A. Layfield
Keyword(s):  
Single Molecule ◽  
Single Molecule Magnet ◽  
High Anisotropy ◽  
Low Symmetry

scholarly journals A Flexible Approach for Engineering Macrocyclic High Performance Pentagonal Bipyramidal Dy(III) Single-Ion Magnets

2020 ◽  
Author(s):  
Angelos Canaj ◽  
Sourav Dey ◽  
Claire Wilson ◽  
Oscar Céspedes ◽  
Rajaraman Gopalan ◽  
...  
Keyword(s):  
Ab Initio ◽  
Single Molecule ◽  
High Performance ◽  
Macrocyclic Ligand ◽  
Hysteresis Loops ◽  
Ligand Field ◽  
Single Molecule Magnet ◽  
Flexible Approach ◽  
High Anisotropy

A strong uniaxial ligand field generated by the Ph3SiO<sup>-</sup> ligand combined with the weak equatorial field of the macrocyclic ligand LN5, generates [DyIII(LN5)(Ph3SiO)2]+, a pentagonal bipyramidal Dy(III) Single-Molecule Magnet with a high anisotropy barrier of 1108 K, and hysteresis loops open up to 14 K. Based on our synthetic blueprint, we use <i>ab initio</i> calculations to predict changes to the macrocycle to increase the barrier to ~ 1800 K.

Ferromagnetic coupling in a chloride-bridged erbium single-molecule magnet

2017 ◽  
Vol 53 (53) ◽  
pp. 7322-7324 ◽  
Author(s):  
J. D. Hilgar ◽  
B. S. Flores ◽  
J. D. Rinehart
Keyword(s):  
Single Molecule ◽  
Ferromagnetic Coupling ◽  
Single Molecule Magnet ◽  
High Anisotropy

We present the first ferromagnetically-coupled Er3+ complex with linked, high-anisotropy Er–COT (COT2− = cyclooctatetraene dianion) subunits.

scholarly journals A Flexible Approach for Engineering Macrocyclic High Performance Pentagonal Bipyramidal Dy(III) Single-Ion Magnets

2020 ◽  
Author(s):  
Angelos Canaj ◽  
Sourav Dey ◽  
Claire Wilson ◽  
Oscar Céspedes ◽  
Rajaraman Gopalan ◽  
...  
Keyword(s):  
Ab Initio ◽  
Single Molecule ◽  
High Performance ◽  
Macrocyclic Ligand ◽  
Hysteresis Loops ◽  
Ligand Field ◽  
Single Molecule Magnet ◽  
Flexible Approach ◽  
High Anisotropy

A strong uniaxial ligand field generated by the Ph3SiO<sup>-</sup> ligand combined with the weak equatorial field of the macrocyclic ligand LN5, generates [DyIII(LN5)(Ph3SiO)2]+, a pentagonal bipyramidal Dy(III) Single-Molecule Magnet with a high anisotropy barrier of 1108 K, and hysteresis loops open up to 14 K. Based on our synthetic blueprint, we use <i>ab initio</i> calculations to predict changes to the macrocycle to increase the barrier to ~ 1800 K.

Exchange-Biasing in a Dinuclear Dysprosium(III) Single-Molecule Magnet with a Large Energy Barrier for Magnetization Reversal

2019 ◽  
Author(s):  
Tian Han ◽  
Marcus J. Giansiracusa ◽  
Zi-Han Li ◽  
You-Song Ding ◽  
Nicholas F. Chilton ◽  
...  
Keyword(s):  
Single Molecule ◽  
Magnetization Reversal ◽  
Energy Barrier ◽  
Magnetic Hysteresis ◽  
Large Energy ◽  
Magnetic Studies ◽  
Bridging Ligands ◽  
Single Molecule Magnet ◽  
Exchange Biasing

A dichlorido-bridged dinuclear dysprosium(III) single-molecule magnet [Dy<sub>2</sub>L<sub>2</sub>(<i>µ</i>-Cl)<sub>2</sub>(THF)<sub>2</sub>] has been made using a diamine-bis(phenolate) ligand, H<sub>2</sub>L. Magnetic studies show an energy barrier for magnetization reversal (<i>U</i><sub>eff</sub>) around 1000 K. Exchange-biasing effect is clearly seen in magnetic hysteresis with steps up to 4 K. <i>Ab</i> initio calculations exclude the possibility of pure dipolar origin of this effect leading to the conclusion that super-exchange <i>via</i> the chloride bridging ligands is important.

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.

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