Enhanced magnetic anisotropy in a tellurium-coordinated cobalt single-ion magnet

2017 ◽  
Vol 4 (4) ◽  
pp. 701-705 ◽  
Author(s):  
Xiao-Nan Yao ◽  
Mu-Wen Yang ◽  
Jin Xiong ◽  
Jia-Jia Liu ◽  
Chen Gao ◽  
...  
Keyword(s):  
Magnetic Anisotropy ◽  
Fine Tuning ◽  
Ligand Field

Fine-tuning of the ligand field of a series of four-coordinate Co(ii) SIMs, yielding the first tellurium-coordinated SIM.

scholarly journals Breaching the Axial Limits in Ln(III) Single-Ion Magnets Using External Electric Field

2020 ◽  
Author(s):  
Arup Sarkar ◽  
Rajaraman Gopalan
Keyword(s):  
Electric Field ◽  
External Electric Field ◽  
Barrier Height ◽  
Electric Fields ◽  
Single Molecule ◽  
Information Storage ◽  
Fine Tuning ◽  
Ligand Field ◽  
Nano Technology ◽  
Technology Applications

<i>Single-Molecule Magnets have potential applications in several nano-technology applications including in high-dense information storage devices and realization of this potential application lies in enhancing the barrier height for magnetization reversal (U<sub>eff</sub>). Recent literature examples suggest that the maximum values that one can obtain using a ligand field are already accomplished. Here we have explored using a combination of DFT and ab initio CASSCF calculations, the way to enhance the barrier height using an oriented external electric field for top three Single-ion Magnets ([Dy(Py)<sub>5</sub>(O<sup>t</sup>Bu)<sub>2</sub>]<sup>+</sup> (<b>1</b>) and [Er{N(SiMe<sub>3</sub>)<sub>2</sub>}<sub>3</sub>Cl]<sup>-</sup> (<b>2</b>) and [Dy(Cp<sup>Me3</sup>)Cl] (<b>3</b>)). For the first time our study reveals that, for apt molecules, if appropriate direction and value of electric fields are chosen, the barrier height could be enhanced twice that of the limit set by the ligand field. This novel non-chemical-fine tuning approach to modulate the magnetic anisotropy is expected to yield new generation SIMs.</i>

scholarly journals Correction: Fine tuning of ferromagnet/antiferromagnet interface magnetic anisotropy for field-free switching of antiferromagnetic spins

Nanoscale ◽  
2020 ◽  
Vol 12 (37) ◽  
pp. 19477-19477
Author(s):  
M. Ślęzak ◽  
P. Dróżdż ◽  
W. Janus ◽  
H. Nayyef ◽  
A. Kozioł-Rachwał ◽  
...  
Keyword(s):  
Magnetic Anisotropy ◽  
Fine Tuning

Correction for ‘Fine tuning of ferromagnet/antiferromagnet interface magnetic anisotropy for field-free switching of antiferromagnetic spins’ by M. Ślęzak et al., Nanoscale, 2020, DOI: 10.1039/d0nr04193a.

Fine-tuning the type of equatorial donor atom in pentagonal bipyramidal Dy(iii) complexes to enhance single-molecule magnet properties

2019 ◽  
Vol 48 (43) ◽  
pp. 16384-16394 ◽  
Author(s):  
Haipeng Wu ◽  
Min Li ◽  
Bing Yin ◽  
Zhengqiang Xia ◽  
Hongshan Ke ◽  
...  
Keyword(s):  
Magnetic Anisotropy ◽  
Single Molecule ◽  
Electronic Effect ◽  
Fine Tuning ◽  
Donor Atom ◽  
Single Molecule Magnet

Upon fine-tuning an equatorial donor, the electronic effect is implemented to significantly enhance magnetic anisotropy in pentagonal bipyramidal DyIII complexes.

Ligand field fine-tuning on the modulation of the magnetic properties and relaxation dynamics of dysprosium(iii) single-ion magnets (SIMs): synthesis, structure, magnetism and ab initio calculations

2017 ◽  
Vol 5 (6) ◽  
pp. 1369-1382 ◽  
Author(s):  
Sheng Zhang ◽  
Haipeng Wu ◽  
Lin Sun ◽  
Hongshan Ke ◽  
Sanping Chen ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Ab Initio Calculations ◽  
Ab Initio ◽  
Theoretical Investigation ◽  
Fine Tuning ◽  
Ligand Field ◽  
Relaxation Dynamics ◽  
Controllable Synthesis

For dysprosium(iii) single-ion magnets (SIMs), it is crucial to explore their controllable synthesis and conduct a systematic theoretical investigation.

The Ligand Field of the Azido Ligand: Insights into Bonding Parameters and Magnetic Anisotropy in a Co(II)–Azido Complex

2015 ◽  
Vol 137 (5) ◽  
pp. 1993-2005 ◽  
Author(s):  
David Schweinfurth ◽  
Michael G. Sommer ◽  
Mihail Atanasov ◽  
Serhiy Demeshko ◽  
Stephan Hohloch ◽  
...  
Keyword(s):  
Magnetic Anisotropy ◽  
Ligand Field ◽  
Bonding Parameters

Fine-tuning of the molecular structures and magnetic anisotropy analysis of two mononuclear dysprosium–sulfur complexes

2018 ◽  
Vol 95 ◽  
pp. 82-85 ◽  
Author(s):  
Shan-Shan Liu ◽  
Jian-Ming Zhao ◽  
Sheng Deng ◽  
Jin Xiong ◽  
Meng-Fei Yang ◽  
...  
Keyword(s):  
Magnetic Anisotropy ◽  
Molecular Structures ◽  
Fine Tuning

scholarly journals Breaching the Axial Limits in Ln(III) Single-Ion Magnets Using External Electric Field

2020 ◽  
Author(s):  
Arup Sarkar ◽  
Rajaraman Gopalan
Keyword(s):  
Electric Field ◽  
External Electric Field ◽  
Barrier Height ◽  
Electric Fields ◽  
Single Molecule ◽  
Information Storage ◽  
Fine Tuning ◽  
Ligand Field ◽  
Nano Technology ◽  
Technology Applications

<i>Single-Molecule Magnets have potential applications in several nano-technology applications including in high-dense information storage devices and realization of this potential application lies in enhancing the barrier height for magnetization reversal (U<sub>eff</sub>). Recent literature examples suggest that the maximum values that one can obtain using a ligand field are already accomplished. Here we have explored using a combination of DFT and ab initio CASSCF calculations, the way to enhance the barrier height using an oriented external electric field for top three Single-ion Magnets ([Dy(Py)<sub>5</sub>(O<sup>t</sup>Bu)<sub>2</sub>]<sup>+</sup> (<b>1</b>) and [Er{N(SiMe<sub>3</sub>)<sub>2</sub>}<sub>3</sub>Cl]<sup>-</sup> (<b>2</b>) and [Dy(Cp<sup>Me3</sup>)Cl] (<b>3</b>)). For the first time our study reveals that, for apt molecules, if appropriate direction and value of electric fields are chosen, the barrier height could be enhanced twice that of the limit set by the ligand field. This novel non-chemical-fine tuning approach to modulate the magnetic anisotropy is expected to yield new generation SIMs.</i>

Is a strong axial crystal-field the only essential condition for a large magnetic anisotropy barrier? The case of non-Kramers Ho(iii) versus Tb(iii )

2018 ◽  
Vol 47 (2) ◽  
pp. 357-366 ◽  
Author(s):  
Sandeep K. Gupta ◽  
Thayalan Rajeshkumar ◽  
Gopalan Rajaraman ◽  
Ramaswamy Murugavel
Keyword(s):  
High Temperature ◽  
Magnetic Anisotropy ◽  
Crystal Field ◽  
Ligand Field ◽  
Essential Condition ◽  
Equatorial Ligand

This study highlights that although strong axiality holds the key for designing high temperature SMMs based on non-Kramers ions, the strength of the equatorial ligand field, although small, cannot be ignored.

Modulation of the magnetic anisotropy of octahedral cobalt(ii) single-ion magnets by fine-tuning the axial coordination microenvironment

2019 ◽  
Vol 6 (3) ◽  
pp. 848-856 ◽  
Author(s):  
Yuewei Wu ◽  
Danian Tian ◽  
Jesús Ferrando-Soria ◽  
Joan Cano ◽  
Lei Yin ◽  
...  
Keyword(s):  
Magnetic Anisotropy ◽  
Easy Plane ◽  
Fine Tuning ◽  
Donor Ligands ◽  
Axial Coordination

The alteration of the axial N-donor ligands leads to two octahedral Co(ii) SIMs with varying easy-plane magnetic anisotropies and dynamic magnetic behaviors.

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