Interchange between coordinated and lattice solvents generates the highest energy barrier within nine-coordinated DyIII single molecule magnets

2017 ◽  
Vol 46 (34) ◽  
pp. 11159-11165 ◽  
Author(s):  
Lin Sun ◽  
Sheng Zhang ◽  
Zhijie Jiang ◽  
Qi Yang ◽  
Sanping Chen ◽  
...  
Keyword(s):  
Magnetic Anisotropy ◽  
Single Molecule ◽  
Energy Barrier ◽  
Easy Axis ◽  
Single Molecule Magnets

It is crucial to promote axiality to enhance easy-axis magnetic anisotropy.

Enhanced energy barriers triggered by magnetic anisotropy modulation via tuning the functional groups on the bridging ligands in Dy2 single-molecule magnets

2018 ◽  
Vol 47 (42) ◽  
pp. 15197-15205 ◽  
Author(s):  
Yaru Qin ◽  
Yu Jing ◽  
Yu Ge ◽  
Wei Liu ◽  
Yahong Li ◽  
...  
Keyword(s):  
Magnetic Anisotropy ◽  
Functional Groups ◽  
Single Molecule ◽  
Energy Barrier ◽  
Energy Barriers ◽  
Single Molecule Magnets ◽  
Bridging Ligands

Two dinuclear dysprosium complexes of 1 and 2 have been synthesized and both of them exhibit SMM behavior. The energy barrier is enhanced ca. 35 K by elaborately tuning the backbones of the ligands.

scholarly journals Covalency and magnetic anisotropy in lanthanide single molecule magnets: the DyDOTA archetype

2019 ◽  
Vol 10 (30) ◽  
pp. 7233-7245 ◽  
Author(s):  
Matteo Briganti ◽  
Guglielmo Fernandez Garcia ◽  
Julie Jung ◽  
Roberta Sessoli ◽  
Boris Le Guennic ◽  
...  
Keyword(s):  
Magnetic Anisotropy ◽  
Ab Initio ◽  
Single Molecule ◽  
Easy Axis ◽  
Single Molecule Magnets ◽  
Covalent Contribution

The unexpected covalent contribution in the DOTADy-OH2 bond revealed by ab initio calculations of the easy axis of magnetization through simple H2O rotations.

Structural Design of Easy-Axis Magnetic Anisotropy and Determination of Anisotropic Parameters of LnIIICuII Single-Molecule Magnets

2010 ◽  
Vol 17 (1) ◽  
pp. 196-205 ◽  
Author(s):  
Takashi Kajiwara ◽  
Motohiro Nakano ◽  
Kohei Takahashi ◽  
Shinya Takaishi ◽  
Masahiro Yamashita
Keyword(s):  
Magnetic Anisotropy ◽  
Single Molecule ◽  
Structural Design ◽  
Easy Axis ◽  
Single Molecule Magnets

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.

Magnetic anisotropy on demand exploiting high-pressure as remote control: an ab initio proof-of-concept

2021 ◽  
Author(s):  
Matteo Briganti ◽  
Federico Totti
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Remote Control ◽  
Magnetic Anisotropy ◽  
Ab Initio ◽  
Single Molecule ◽  
Boiling Temperature ◽  
Proof Of Concept ◽  
Single Molecule Magnets ◽  
On Demand

Lanthanide based single molecule magnets have recently become very promising systems for creating single molecule device working at high temperature (nitrogen boiling temperature). However, the variation of direction of the...

Structural anisotropy of cyanido-bridged {CoII9WV6} single-molecule magnets induced by bidentate ligands: towards the rational enhancement of an energy barrier

2016 ◽  
Vol 52 (26) ◽  
pp. 4772-4775 ◽  
Author(s):  
Szymon Chorazy ◽  
Michał Rams ◽  
Anna Hoczek ◽  
Bernard Czarnecki ◽  
Barbara Sieklucka ◽  
...  
Keyword(s):  
Single Molecule ◽  
Energy Barrier ◽  
Magnetic Relaxation ◽  
Bidentate Ligands ◽  
Single Molecule Magnets ◽  
Structural Anisotropy ◽  
Slow Magnetic Relaxation

{CoII9[WV(CN)8]6} clusters capped by odd and even number of bidentate ligands reveal the improved slow magnetic relaxation due to the significant structural anisotropy.

Polyoxometalate-Supported Lanthanoid Single-Molecule Magnets

2014 ◽  
Vol 67 (11) ◽  
pp. 1542 ◽  
Author(s):  
Michele Vonci ◽  
Colette Boskovic
Keyword(s):  
Single Molecule ◽  
Energy Barrier ◽  
Magnetic Relaxation ◽  
Donor Ligands ◽  
Single Molecule Magnets ◽  
Single Molecule Magnet ◽  
Coordination Numbers ◽  
Oxygen Donor ◽  
Slow Magnetic Relaxation

Polyoxometalates are robust and versatile multidentate oxygen-donor ligands, eminently suitable for coordination to trivalent lanthanoid ions. To date, 10 very different structural families of such complexes have been found to exhibit slow magnetic relaxation due to single-molecule magnet (SMM) behaviour associated with the lanthanoid ions. These families encompass complexes with between one and four of the later lanthanoid ions: Tb, Dy, Ho, Er, and Yb. The lanthanoid coordination numbers vary between six and eleven and a range of coordination geometries are evident. The highest energy barrier to magnetisation reversal measured to date for a lanthanoid–polyoxometalate SMM is Ueff/kB = 73 K for the heterodinuclear Dy–Eu compound (Bu4N)8H4[DyEu(OH)2(γ-SiW10O36)2].

scholarly journals Rational Electrostatic Design of Easy-Axis Magnetic Anisotropy in a ZnII-DyIII-ZnIISingle-Molecule Magnet with a High Energy Barrier

2014 ◽  
Vol 20 (44) ◽  
pp. 14262-14269 ◽  
Author(s):  
Itziar Oyarzabal ◽  
José Ruiz ◽  
José Manuel Seco ◽  
Marco Evangelisti ◽  
Agustín Camón ◽  
...  
Keyword(s):  
Magnetic Anisotropy ◽  
Energy Barrier ◽  
Easy Axis ◽  
High Energy ◽  
High Energy Barrier
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