scholarly journals Magnetic Hysteresis at 10 K in Single Molecule Magnet Self‐Assembled on Gold

2021 ◽  
pp. 2000777
Author(s):  
Chia‐Hsiang Chen ◽  
Lukas Spree ◽  
Emmanouil Koutsouflakis ◽  
Denis S. Krylov ◽  
Fupin Liu ◽  
...  
Keyword(s):  
Single Molecule ◽  
Magnetic Hysteresis ◽  
Single Molecule Magnet ◽  
Self Assembled

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.

scholarly journals High temperature quantum tunnelling of magnetization and thousand kelvin anisotropy barrier in a Dy2 single-molecule magnet

2021 ◽  
Author(s):  
Haipeng Wu ◽  
Min Li ◽  
Zhengqiang Xia ◽  
Vincent Montigaud ◽  
Olivier Cador ◽  
...  
Keyword(s):  
High Temperature ◽  
Crystal Field ◽  
Single Molecule ◽  
Magnetic Hysteresis ◽  
Single Molecule Magnet ◽  
Quantum Tunnelling ◽  
Field Environment

The control of the crystal field environment within the cis/trans stereoisomers allowed the observation of a significantly enhanced anisotropy barrier to 1300 K and magnetic hysteresis opened up to 16 K.

Insertion of a functionalised single molecule magnet into preformed self-assembled monolayers

2008 ◽  
Vol 361 (14-15) ◽  
pp. 3944-3950 ◽  
Author(s):  
F. Pineider ◽  
M. Mannini ◽  
C. Sangregorio ◽  
L. Gorini ◽  
R. Sessoli
Keyword(s):  
Single Molecule ◽  
Self Assembled Monolayers ◽  
Single Molecule Magnet ◽  
Assembled Monolayers ◽  
Self Assembled

A linear trinuclear ferrous single molecule magnet

2018 ◽  
Vol 47 (46) ◽  
pp. 16704-16708
Author(s):  
Shihao Liu ◽  
Yi-Fei Deng ◽  
Chang'An Li ◽  
Xiaoyong Chang ◽  
Yuan-Zhu Zhang
Keyword(s):  
Single Molecule ◽  
Energy Barrier ◽  
Magnetic Hysteresis ◽  
Hysteresis Loops ◽  
Effective Energy ◽  
Single Molecule Magnet ◽  
Magnetic Hysteresis Loops

A linear trinuclear ferrous [FeII3] SMM exhibited clear magnetic hysteresis loops and a significant higher effective energy barrier in comparison with its cobalt(ii) analogue.

scholarly journals A Double-Dysprosocenium Single-Molecule Magnet Bound Together with Neutral Ligands

2019 ◽  
Author(s):  
Peter Evans ◽  
Daniel Reta ◽  
Conrad Goodwin ◽  
Fabrizio Ortu ◽  
Nicholas Chilton ◽  
...  
Keyword(s):  
Single Molecule ◽  
Weak Interactions ◽  
Magnetic Hysteresis ◽  
Single Molecule Magnet ◽  
Crystal Fields ◽  
Effective Barrier ◽  
Neutral Ligands

A dinuclear dysprosocenium dication has been synthesised that is bound together by weak interactions between {Dy(Cp*)<sub>2</sub>}<sup>+</sup> fragments and neutral NEt<sub>3</sub>AlMe<sub>3</sub> molecules. The axiality of the Dy<sup>3+</sup> crystal fields are perturbed by these equatorial interactions but a relatively large effective barrier to magnetisation reversal of 860(60) cm<sup>–1</sup> and magnetic hysteresis up to 15 K are observed.

scholarly journals Magnetic hysteresis in self-assembled monolayers of Dy-fullerene single molecule magnets on gold

Nanoscale ◽  
2018 ◽  
Vol 10 (24) ◽  
pp. 11287-11292 ◽  
Author(s):  
C.-H. Chen ◽  
D. S. Krylov ◽  
S. M. Avdoshenko ◽  
F. Liu ◽  
L. Spree ◽  
...  
Keyword(s):  
Single Molecule ◽  
Magnetic Hysteresis ◽  
Self Assembled Monolayers ◽  
Single Molecule Magnets ◽  
Assembled Monolayers ◽  
Self Assembled

Self-assembled monolayers from single molecule magnets DySc2N@C80 and Dy2ScN@C80 functionalized with thioether groups retain magnetic bistability on Au(111) surface.

Metallogrid Single-Molecule Magnet: Solvent-Induced Nuclearity Transformation and Magnetic Hysteresis at 16 K

2016 ◽  
Vol 55 (11) ◽  
pp. 5476-5484 ◽  
Author(s):  
Wei Huang ◽  
Fu-Xing Shen ◽  
Shu-Qi Wu ◽  
Li Liu ◽  
Dayu Wu ◽  
...  
Keyword(s):  
Single Molecule ◽  
Magnetic Hysteresis ◽  
Single Molecule Magnet

scholarly journals A Double-Dysprosocenium Single-Molecule Magnet Bound Together with Neutral Ligands

2019 ◽  
Author(s):  
Peter Evans ◽  
Daniel Reta ◽  
Conrad Goodwin ◽  
Fabrizio Ortu ◽  
Nicholas Chilton ◽  
...  
Keyword(s):  
Single Molecule ◽  
Weak Interactions ◽  
Magnetic Hysteresis ◽  
Single Molecule Magnet ◽  
Crystal Fields ◽  
Effective Barrier ◽  
Neutral Ligands

A dinuclear dysprosocenium dication has been synthesised that is bound together by weak interactions between {Dy(Cp*)<sub>2</sub>}<sup>+</sup> fragments and neutral NEt<sub>3</sub>AlMe<sub>3</sub> molecules. The axiality of the Dy<sup>3+</sup> crystal fields are perturbed by these equatorial interactions but a relatively large effective barrier to magnetisation reversal of 860(60) cm<sup>–1</sup> and magnetic hysteresis up to 15 K are observed.

scholarly journals Carbide clusterfullerene DyYTiC@C80 featuring three different metals in the endohedral cluster and its single-ion magnetism

2018 ◽  
Vol 54 (76) ◽  
pp. 10683-10686 ◽  
Author(s):  
Ariane Brandenburg ◽  
Denis S. Krylov ◽  
Alexander Beger ◽  
Anja U. B. Wolter ◽  
Bernd Büchner ◽  
...  
Keyword(s):  
Single Molecule ◽  
Quantum Tunneling ◽  
Magnetic Hysteresis ◽  
Zero Field ◽  
Single Molecule Magnet ◽  
Quantum Tunneling Of Magnetization ◽  
Endohedral Metallofullerene

Endohedral metallofullerene DyYTiC@C80-Ih with three different metals in the endohedral cluster is a single molecule magnet with quantum tunneling of magnetization near zero field and a magnetic hysteresis up to 7 K.

scholarly journals Magnetic hysteresis up to 80 kelvin in a dysprosium metallocene single-molecule magnet

Science ◽  
2018 ◽  
Vol 362 (6421) ◽  
pp. 1400-1403 ◽  
Author(s):  
Fu-Sheng Guo ◽  
Benjamin M. Day ◽  
Yan-Cong Chen ◽  
Ming-Liang Tong ◽  
Akseli Mansikkamäki ◽  
...  
Keyword(s):  
Single Molecule ◽  
Magnetic Hysteresis ◽  
Information Storage ◽  
Blocking Temperature ◽  
Wave Number ◽  
Magnetic Memory ◽  
Single Molecule Magnets ◽  
Single Molecule Magnet ◽  
Chemical Strategy ◽  
Lower Size

Single-molecule magnets (SMMs) containing only one metal center may represent the lower size limit for molecule-based magnetic information storage materials. Their current drawback is that all SMMs require liquid-helium cooling to show magnetic memory effects. We now report a chemical strategy to access the dysprosium metallocene cation [(CpiPr5)Dy(Cp*)]+ (CpiPr5, penta-iso-propylcyclopentadienyl; Cp*, pentamethylcyclopentadienyl), which displays magnetic hysteresis above liquid-nitrogen temperatures. An effective energy barrier to reversal of the magnetization of Ueff = 1541 wave number is also measured. The magnetic blocking temperature of TB = 80 kelvin for this cation overcomes an essential barrier toward the development of nanomagnet devices that function at practical temperatures.

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