“Isolated” DyO+ Embedded in a Ceramic Apatite Matrix Featuring Single-Molecule Magnet Behavior with a High Energy Barrier for Magnetization Relaxation

2017 ◽  
Vol 129 (43) ◽  
pp. 13601-13605 ◽  
Author(s):  
Pavel E. Kazin ◽  
Mikhail A. Zykin ◽  
Valentina V. Utochnikova ◽  
Oxana V. Magdysyuk ◽  
Alexander V. Vasiliev ◽  
...  
Keyword(s):  
Single Molecule ◽  
Energy Barrier ◽  
High Energy ◽  
Magnetization Relaxation ◽  
Single Molecule Magnet ◽  
High Energy Barrier

scholarly journals A Co-based single-molecule magnet confined in a barium phosphate apatite matrix with a high energy barrier for magnetization relaxation

2017 ◽  
Vol 53 (39) ◽  
pp. 5416-5419 ◽  
Author(s):  
Pavel E. Kazin ◽  
Mikhail A. Zykin ◽  
Lev A. Trusov ◽  
Artem A. Eliseev ◽  
Oxana V. Magdysyuk ◽  
...  
Keyword(s):  
High Spin ◽  
Single Molecule ◽  
Energy Barrier ◽  
High Energy ◽  
Magnetization Relaxation ◽  
Single Molecule Magnet ◽  
High Energy Barrier ◽  
Spin Reversal ◽  
Type Lattice ◽  
Apatite Type

A Co-ion introduced into the trigonal channel of an apatite-type lattice forms a magnetically anisotropic two-coordinated Co-complex with a record-high spin-reversal energy barrier.

“Isolated” DyO+ Embedded in a Ceramic Apatite Matrix Featuring Single-Molecule Magnet Behavior with a High Energy Barrier for Magnetization Relaxation

2017 ◽  
Vol 56 (43) ◽  
pp. 13416-13420 ◽  
Author(s):  
Pavel E. Kazin ◽  
Mikhail A. Zykin ◽  
Valentina V. Utochnikova ◽  
Oxana V. Magdysyuk ◽  
Alexander V. Vasiliev ◽  
...  
Keyword(s):  
Single Molecule ◽  
Energy Barrier ◽  
High Energy ◽  
Magnetization Relaxation ◽  
Single Molecule Magnet ◽  
High Energy Barrier

Slow magnetic relaxation in dinuclear dysprosium and holmium phenoxide bridged complexes: a Dy2 single molecule magnet with a high energy barrier

2021 ◽  
Author(s):  
Matilde Fondo ◽  
Julio Corredoira-Vázquez ◽  
Ana M. Garcia-Deibe ◽  
Jesus Sanmartin Matalobos ◽  
Silvia Gómez-Coca ◽  
...  
Keyword(s):  
Crystal Structures ◽  
Single Molecule ◽  
Energy Barrier ◽  
Magnetic Relaxation ◽  
High Energy ◽  
Single Molecule Magnet ◽  
High Energy Barrier ◽  
Slow Magnetic Relaxation

Dinuclear [M(H3L1,2,4)]2 (M = Dy, Dy2; M = Ho, Ho2) complexes were isolated from an heptadentate aminophenol ligand. The crystal structures of Dy2·2THF, and the pyridine adducts Dy2·2Py and Ho2·2Py,...

scholarly journals Hexanuclear [Cp*Dy]6 single-molecule magnet

2020 ◽  
Vol 56 (27) ◽  
pp. 3887-3890 ◽  
Author(s):  
Jianfeng Wu ◽  
Serhiy Demeshko ◽  
Sebastian Dechert ◽  
Franc Meyer
Keyword(s):  
Single Molecule ◽  
Energy Barrier ◽  
Magnetic Relaxation ◽  
Hysteresis Loops ◽  
High Energy ◽  
Single Molecule Magnet ◽  
High Energy Barrier

A hexanuclear cluster containing six {Cp*Dy} units shows a high energy barrier (Ueff = 561 K) for magnetic relaxation and butterfly-shaped hysteresis loops up to 4.5 K.

Multiple magnetic relaxation processes, magnetocaloric effect and fluorescence properties of rhombus-shaped tetranuclear rare earth complexes

2016 ◽  
Vol 45 (1) ◽  
pp. 253-264 ◽  
Author(s):  
Hong-Ling Gao ◽  
Li Jiang ◽  
Shuang Liu ◽  
Hai-Yun Shen ◽  
Wen-Min Wang ◽  
...  
Keyword(s):  
Rare Earth ◽  
Magnetocaloric Effect ◽  
Single Molecule ◽  
Energy Barrier ◽  
Magnetic Relaxation ◽  
High Energy ◽  
Rare Earth Complexes ◽  
Relaxation Processes ◽  
Single Molecule Magnet ◽  
High Energy Barrier

A multi-relaxation single-molecule magnet (SMM) of a {Dy4} complex exhibits two distinct relaxation processes, with a high energy barrier of 121 K.

New members of the polynuclear manganese family: MnII2MnIII2 single-molecule magnets and MnII3MnIII8 antiferromagnetic complexes. Synthesis and magnetostructural correlations

2020 ◽  
Vol 49 (40) ◽  
pp. 13970-13985
Author(s):  
Nuno Reis Conceição ◽  
Oksana V. Nesterova ◽  
Cyril Rajnák ◽  
Roman Boča ◽  
Armando J. L. Pombeiro ◽  
...  
Keyword(s):  
Single Molecule ◽  
Energy Barrier ◽  
High Energy ◽  
Single Molecule Magnets ◽  
New Members ◽  
High Energy Barrier ◽  
Tetranuclear Complexes

Three novel Mn4 and Mn11 complexes were synthesized and characterized. Tetranuclear complexes behave as single-molecule magnets with a high energy barrier.

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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