scholarly journals Slow magnetic relaxation in a dimeric Mn2Ca2 complex enabled by the large Mn(iii) rhombicity

2017 ◽  
Vol 46 (3) ◽  
pp. 720-732 ◽  
Author(s):  
Ana Arauzo ◽  
Elena Bartolomé ◽  
Andrew C. Benniston ◽  
Silvia Melnic ◽  
Sergiu Shova ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Magnetic Relaxation ◽  
Zero Magnetic Field ◽  
Transverse Anisotropy ◽  
Slow Magnetic Relaxation

A large single-ion transverse anisotropy at Mn(iii) sites induces slow magnetic relaxation at zero magnetic field of the ferromagnetic Mn dimers in a singular Mn2Ca2 complex.

Magnetic field and dilution effects on the slow relaxation of {Er3} triangle-based arsenotungstate single-molecule magnets

2020 ◽  
Vol 49 (35) ◽  
pp. 12458-12465 ◽  
Author(s):  
Hanhan Chen ◽  
Lin Sun ◽  
Jinpeng Zhang ◽  
Zikang Xiao ◽  
Pengtao Ma ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Single Molecule ◽  
Magnetic Relaxation ◽  
Slow Relaxation ◽  
Relaxation Processes ◽  
Single Molecule Magnets ◽  
Thermally Activated ◽  
Slow Magnetic Relaxation ◽  
Dilution Effects

Triangular {Er3} cluster containing POM exhibits field-induced two thermally activated relaxation processes. Whereas, the diamagnetic dilution sample indicates slow magnetic relaxation with the QTM being partially suppressed.

Slow magnetic relaxation in Cu(ii)–Eu(iii) and Cu(ii)–La(iii) complexes

2019 ◽  
Vol 43 (32) ◽  
pp. 12698-12701 ◽  
Author(s):  
Malay Dolai ◽  
Mahammad Ali ◽  
Cyril Rajnák ◽  
Ján Titiš ◽  
Roman Boča
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Low Temperature ◽  
Ground State ◽  
Magnetic Relaxation ◽  
Slow Magnetic Relaxation ◽  
Paramagnetic Behaviour

A dinuclear [(H2O)Cu(HLN2O2)Eu(NO3)3] complex exhibits paramagnetic behaviour with S = 1/2 ground state. At low temperature it displays slow magnetic relaxation that is supported by a small external magnetic field.

Positive zero-field splitting and unexpected slow magnetic relaxation in the magneto-chemical calibrant HgCo(NCS)4

2021 ◽  
Vol 50 (10) ◽  
pp. 3468-3472
Author(s):  
Roman Boča ◽  
Ján Titiš ◽  
Cyril Rajnák ◽  
J. Krzystek
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Magnetic Relaxation ◽  
Positive Zero ◽  
Zero Field ◽  
Zero Field Splitting ◽  
Field Splitting ◽  
Zero Field Splitting Parameter ◽  
Slow Magnetic Relaxation ◽  
Splitting Parameter

Magnetochemical standard HgCo(NCS)4 with positive zero-field splitting parameter D displays a slow magnetic relaxation strongly dependent upon the external magnetic field.

scholarly journals A Series of Field-Induced Single-Ion Magnets Based on the Seven-Coordinate Co(II) Complexes with the Pentadentate (N3O2) H2dapsc Ligand

2019 ◽  
Vol 5 (4) ◽  
pp. 58 ◽  
Author(s):  
Kopotkov ◽  
Korchagin ◽  
Sasnovskaya ◽  
Gilmutdinov ◽  
Yagubskii
Keyword(s):  
Magnetic Field ◽  
Ab Initio ◽  
Static Magnetic Field ◽  
Magnetic Relaxation ◽  
Theoretical Description ◽  
Easy Plane ◽  
Magnetic Data ◽  
Slow Magnetic Relaxation

A series of five new mononuclear pentagonal bipyramidal Co(II) complexes with the equatorial 2,6-diacetylpyridine bis(semicarbazone) ligand (H2dapsc) and various axial pseudohalide ligands (SCN, SeCN, N(CN)2, C(CN)3, and N3) was prepared and structurally characterizated: [Co(H2dapsc)(SCN)2]∙0.5C2H5OH (1), [Co(H2dapsc)(SeCN)2]∙0.5C2H5OH (2), [Co(H2dapsc)(N(CN)2)2]∙2H2O (3), [Co(H2dapsc)(C(CN)3)(H2O)](NO3)∙1.16H2O (4), and {[Co(H2dapsc)(H2O)(N3)][Co(H2dapsc)(N3)2]}N3∙4H2O (5). The combined analyses of the experimental DС and AC magnetic data of the complexes (1–5) and two other earlier described those of this family [Co(H2dapsc)(H2O)2)](NO3)2∙2H2O (6) and [Co(H2dapsc)(Cl)(H2O)]Cl∙2H2O (7), their theoretical description and the ab initio CASSCF/NEVPT2 calculations reveal large easy-plane magnetic anisotropies for all complexes (D = + 35 − 40 cm‒1). All complexes under consideration demonstrate slow magnetic relaxation with dominant Raman and direct spin–phonon processes at static magnetic field and so they belong to the class of field-induced single-ion magnets (SIMs).

Exceptionally slow magnetic relaxation in a mononuclear hexacoordinate Ni(ii) complex

2019 ◽  
Vol 48 (31) ◽  
pp. 11647-11650 ◽  
Author(s):  
Ján Titiš ◽  
Veronika Chrenková ◽  
Cyril Rajnák ◽  
Ján Moncol ◽  
Dušan Valigura ◽  
...  
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Magnetic Relaxation ◽  
Slow Magnetic Relaxation

A hexacoordinate mononuclear [Ni(pydm)2](dnbz)2 complex shows field-induced slow magnetic relaxation with two or three relaxation channels that are strongly supported by an external magnetic field.

scholarly journals Magnetic Field Induced Slow Magnetic Relaxation in KEr(MoO4)2

2015 ◽  
Vol 127 (2) ◽  
pp. 353-355 ◽  
Author(s):  
V. Tkáč ◽  
A. Orendáčová ◽  
R. Tarasenko ◽  
D.M. Pajerowski ◽  
E. Čižmár ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Magnetic Relaxation ◽  
Slow Magnetic Relaxation

Modulating the slow magnetic relaxation of a mononuclear Dy(III) single-molecule magnet via magnetic field and dilution effect

CrystEngComm ◽  
2021 ◽  
Author(s):  
Peipei Cen ◽  
Zixin He ◽  
Runmei Ding ◽  
Huifang Yang ◽  
Li Li ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Single Molecule ◽  
Self Assembly ◽  
Magnetic Relaxation ◽  
Dilution Effect ◽  
Crystallographic Data ◽  
Single Molecule Magnet ◽  
Slow Magnetic Relaxation ◽  
Dysprosium Complex

A β-diketonate mononuclear dysprosium complex, with the formula [Dy(dpq)(BTFA)3] (1), has been prepared via self-assembly between 3-benzoyl-1,1,1-trifluoroacetone (BTFA) and dipyrido [3,2-d:2’,3’-f] quinoxaline (dpq) ligands. The crystallographic data reveals that the...

Tuning Transverse Anisotropy in CoIII–CoII–CoIII Mixed-Valence Complex toward Slow Magnetic Relaxation

2013 ◽  
Vol 52 (19) ◽  
pp. 10976-10982 ◽  
Author(s):  
Dayu Wu ◽  
Xingxing Zhang ◽  
Ping Huang ◽  
Wei Huang ◽  
Mingyue Ruan ◽  
...  
Keyword(s):  
Magnetic Relaxation ◽  
Mixed Valence ◽  
Transverse Anisotropy ◽  
Slow Magnetic Relaxation ◽  
Mixed Valence Complex

A series of new octanuclear Ln8 clusters: magnetic studies reveal a significant cryogenic magnetocaloric effect and slow magnetic relaxation

2019 ◽  
Vol 43 (3) ◽  
pp. 1617-1625 ◽  
Author(s):  
Ling-Fei Li ◽  
Wei-Wei Kuang ◽  
Yi-Ming Li ◽  
Li-Li Zhu ◽  
Yun Xu ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Magnetocaloric Effect ◽  
Direct Current ◽  
Magnetic Relaxation ◽  
Magnetic Entropy Change ◽  
Entropy Change ◽  
Magnetic Entropy ◽  
Magnetic Studies ◽  
Slow Magnetic Relaxation ◽  
Current Magnetic Field

A series of new octanuclear Ln8 clusters. Magnetically, Gd8 exhibited a significant magnetocaloric effect and a magnetic entropy change is 32.49 J K−1 kg−1 for a field of 7 T at 2 K, while Dy8 exhibited a frequency dependent slow relaxation of magnetization at a zero applied direct current magnetic field.

Field influence on the slow magnetic relaxation of nickel-based single ion magnets

2018 ◽  
Vol 47 (24) ◽  
pp. 7879-7882 ◽  
Author(s):  
Ján Titiš ◽  
Cyril Rajnák ◽  
Dušan Valigura ◽  
Roman Boča
Keyword(s):  
Magnetic Field ◽  
Relaxation Time ◽  
External Field ◽  
Applied Magnetic Field ◽  
Magnetic Relaxation ◽  
Low Frequency ◽  
Mononuclear Complex ◽  
Frequency Channel ◽  
Slow Magnetic Relaxation ◽  
Field Influence

A mononuclear complex, [Ni(pydca)(dmpy)]·H2O, exhibits a slow magnetic relaxation under an applied magnetic field with manifold relaxation channels. With an external field of 0.6 T, the low-frequency channel is the dominating relaxation path yielding a relaxation time of 322 ms at 2.0 K. At 1.2 T the relaxation time is as slow as 876 ms.

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