A Novel 9-MC-3 and 15-MC-6 Onset Stacked Metallacrown Single-Molecule Magnet: Synthesis and Crystal Structure

2011 ◽  
Vol 50 (7) ◽  
pp. 2705-2707 ◽  
Author(s):  
Suna Wang ◽  
Lingqian Kong ◽  
Hua Yang ◽  
Zhoutong He ◽  
Zheng Jiang ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Single Molecule ◽  
Synthesis And Crystal Structure ◽  
Single Molecule Magnet

Crystal structure and single-molecule magnet behavior of a novel tetranuclear Dy(III)-based cluster

2021 ◽  
Vol 1226 ◽  
pp. 129373
Author(s):  
Xiao-Hong Shi ◽  
Wen-Min Wang ◽  
Li-Li Yan ◽  
Chen-Juan Fan ◽  
Jing-Lin Pang ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Single Molecule ◽  
Single Molecule Magnet

Modulating single-molecule magnet behaviour of phenoxo-O bridged lanthanide(iii) dinuclear complexes by using different β-diketonate coligands

2016 ◽  
Vol 3 (1) ◽  
pp. 133-141 ◽  
Author(s):  
Wen-Min Wang ◽  
Shi-Yu Wang ◽  
Hong-Xia Zhang ◽  
Hai-Yun Shen ◽  
Ji-Yong Zou ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Single Molecule ◽  
Magnetic Relaxation ◽  
Dinuclear Complexes ◽  
Magnetic Studies ◽  
Single Molecule Magnet ◽  
Similar Crystal Structure

Three Dy2 complexes with similar crystal structure have been synthesized. Magnetic studies reveal that they exhibit different magnetic relaxation behaviors, originating from the different chemical environments of the center Dy3+ ions with different β-diketonate coligands.

scholarly journals Crystal Structure and Magnetic Properties of Peacock–Weakley Type Polyoxometalates Na9[Ln(W5O18)2] (Ln = Tm, Yb): Rare Example of Tm(III) SMM

2020 ◽  
Vol 6 (4) ◽  
pp. 53
Author(s):  
Oleksandra Yu. Mariichak ◽  
Sandra Kaabel ◽  
Yevgen A. Karpichev ◽  
Georgiy M. Rozantsev ◽  
Serhii V. Radio ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Magnetic Properties ◽  
Nitric Acid ◽  
Ab Initio Calculations ◽  
Ab Initio ◽  
Crystal Structures ◽  
Single Molecule ◽  
Relaxation Processes ◽  
Single Molecule Magnet ◽  
Physico Chemical

We report Peacock–Weakley complexes, Na9[Ln(W5O18)2]∙35H2O, formed with Tm(III), 1, and Yb(III), 2. Their syntheses, physico-chemical characterizations, crystal structures, and magnetic properties are described. Ab initio calculations are also reported. These polyoxometalate (POM) complexes were obtained using original synthetic conditions where acidification was performed with a stoichiometric amount of nitric acid to an acidity of Z = ν(H+)/ν(WO42–) = 8/10 = 0.80. Both the Tm(III) and Yb(III) derivatives were found to exhibit field-induced slow relaxation of their magnetization likely controlled by Raman and Orbach relaxation processes. 1 is a rare example of a Tm(III)-based single-molecule magnet (SMM) and is a consequence of the oblate tetragonal anti-prismatic symmetry of the coordination sphere.

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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