scholarly journals Slow magnetic relaxation in a {CoIICoIII2} complex containing a high magnetic anisotropy trigonal bipyramidal CoII centre

2018 ◽  
Vol 47 (28) ◽  
pp. 9237-9240 ◽  
Author(s):  
Alexandra Collet ◽  
Gavin A. Craig ◽  
María José Heras Ojea ◽  
Lakshmi Bhaskaran ◽  
Claire Wilson ◽  
...  
Keyword(s):  
Magnetic Anisotropy ◽  
Magnetic Relaxation ◽  
Easy Plane ◽  
Trigonal Bipyramidal ◽  
Slow Magnetic Relaxation

Incorporation of a trigonal bipyramidal CoII centre in {CoIICoIII2} leads to a large, easy-plane magnetic anisotropy and slow magnetic relaxation.

scholarly journals A large axial magnetic anisotropy in trigonal bipyramidal Fe(ii)

2020 ◽  
Vol 56 (50) ◽  
pp. 6826-6829
Author(s):  
Moya A. Hay ◽  
Arup Sarkar ◽  
Gavin A. Craig ◽  
Katie E. R. Marriott ◽  
Claire Wilson ◽  
...  
Keyword(s):  
Magnetic Anisotropy ◽  
Coordination Sphere ◽  
Magnetic Relaxation ◽  
Geometric Distortion ◽  
Trigonal Bipyramidal ◽  
Slow Magnetic Relaxation

Minimising geometric distortion in the first coordination sphere generates a large axial magnetic anisotropy in trigonal bipyramidal Fe(ii) and rare slow magnetic relaxation.

scholarly journals Pushing the limits of magnetic anisotropy in trigonal bipyramidal Ni(ii)

2015 ◽  
Vol 6 (12) ◽  
pp. 6823-6828 ◽  
Author(s):  
Katie E. R. Marriott ◽  
Lakshmi Bhaskaran ◽  
Claire Wilson ◽  
Marisa Medarde ◽  
Stefan T. Ochsenbein ◽  
...  
Keyword(s):  
Magnetic Anisotropy ◽  
High Spin ◽  
Magnetic Relaxation ◽  
High Field ◽  
Magnetic Studies ◽  
Trigonal Bipyramidal ◽  
Slow Magnetic Relaxation

High-field EPR and magnetic studies of a high-spin Ni(ii) trigonal bipyramidal complex reveal a giant axial magnetic anisotropy and a rare field-induced slow magnetic relaxation.

scholarly journals Field Induced Single Ion Magnetic Behaviour in Square-Pyramidal Cobalt(II) Complexes with Easy-Plane Magnetic Anisotropy

2019 ◽  
Vol 5 (1) ◽  
pp. 12 ◽  
Author(s):  
Amit Mondal ◽  
Arpan Mondal ◽  
Sanjit Konar
Keyword(s):  
Magnetic Anisotropy ◽  
Magnetic Relaxation ◽  
Magnetic Measurements ◽  
Chloride Ion ◽  
Magnetic Behaviour ◽  
Easy Plane ◽  
Ab Initio Theory ◽  
Slow Magnetic Relaxation ◽  
Experimental Values ◽  
Insight Into

Two penta-coordinate CoII complexes with formulae [Co(14-TMC)Cl](BF4) (1, 14-TMC = 1,4,8,11-Tetramethyl-1,4,8,11-tetraazacyclotetradecane) and [Co(12-TBC)Cl](ClO4)·(MeCN) (2, 12-TBC = 1,4,7,10-Tetrabenzyl-1,4,7,10-tetraazacyclododecane) were synthesized and characterized. Structural analysis revealed that ligand coordinates to the CoII centre in a tetradentate fashion and the fifth position is occupied by chloride ion and the geometries around CoII centres are best described as distorted square pyramidal. Detailed magnetic measurements disclose the presence of significant easy-plane magnetic anisotropy and field induced slow magnetic relaxation behaviours of the studied complexes. More insight into the magnetic anisotropy has been given using ab initio theory calculations, which agree well with the experimental values and further confirmed the easy-plane magnetic anisotropy.

scholarly journals Investigation of easy-plane magnetic anisotropy in P-ligand square-pyramidal CoII single ion magnets

2017 ◽  
Vol 53 (38) ◽  
pp. 5338-5341 ◽  
Author(s):  
Amit Kumar Mondal ◽  
Jesús Jover ◽  
Eliseo Ruiz ◽  
Sanjit Konar
Keyword(s):  
Magnetic Anisotropy ◽  
Magnetic Relaxation ◽  
Easy Plane ◽  
Relaxation Behavior ◽  
Donor Ligand ◽  
Slow Magnetic Relaxation ◽  
First Time

Field induced slow magnetic relaxation behavior has been studied for the first time for two P-donor ligand-based square-pyramidal CoII complexes with an easy-plane magnetic anisotropy.

scholarly journals Slow Magnetic Relaxation in a One-Dimensional Coordination Polymer Constructed from Hepta-Coordinate Cobalt(II) Nodes

2020 ◽  
Vol 6 (4) ◽  
pp. 45
Author(s):  
Amit Kumar Mondal ◽  
Arpan Mondal ◽  
Sanjit Konar
Keyword(s):  
Magnetic Susceptibility ◽  
Coordination Polymer ◽  
Magnetic Anisotropy ◽  
Ab Initio Calculations ◽  
Direct Current ◽  
Magnetic Relaxation ◽  
Relaxation Processes ◽  
Ac Magnetic Susceptibility ◽  
One Dimensional ◽  
Slow Magnetic Relaxation

A one-dimensional coordination polymer was synthesized employing hepta-coordinate CoII as nodes and dicyanamide as linkers. Detailed direct current (DC) and alternating current (AC) magnetic susceptibility measurements reveal the presence of field-induced slow magnetic relaxation behavior of the magnetically isolated seven-coordinate CoII center with an easy-plane magnetic anisotropy. Detailed ab initio calculations were performed to understand the magnetic relaxation processes. To our knowledge, the reported complex represents the first example of slow magnetic relaxation in a one-dimensional coordination polymer constructed from hepta-coordinate CoII nodes and dicyanamide linkers.

Trigonal Bipyramidal Dy5 Cluster Exhibiting Slow Magnetic Relaxation

2012 ◽  
Vol 51 (4) ◽  
pp. 2186-2190 ◽  
Author(s):  
Jun-Bo Peng ◽  
Xiang-Jian Kong ◽  
Yan-Ping Ren ◽  
La-Sheng Long ◽  
Rong-Bin Huang ◽  
...  
Keyword(s):  
Magnetic Relaxation ◽  
Trigonal Bipyramidal ◽  
Slow Magnetic Relaxation

scholarly journals In-depth investigation of large axial magnetic anisotropy in monometallic 3d complexes using frequency domain magnetic resonance and ab initio methods: a study of trigonal bipyramidal Co(ii)

2019 ◽  
Vol 10 (25) ◽  
pp. 6354-6361 ◽  
Author(s):  
Moya A. Hay ◽  
Arup Sarkar ◽  
Gavin A. Craig ◽  
Lakshmi Bhaskaran ◽  
Joscha Nehrkorn ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Magnetic Anisotropy ◽  
Ab Initio ◽  
Frequency Domain ◽  
Easy Plane ◽  
Ab Initio Methods ◽  
Trigonal Bipyramidal

Symmetry control using DABCO generates a large easy-plane magnetic anisotropy with zero rhombic anisotropy.

Coligand Effects on the Field-Induced Double Slow Magnetic Relaxation in Six-Coordinate Cobalt(II) Single-Ion Magnets (SIMs) with Positive Magnetic Anisotropy

2019 ◽  
Vol 58 (23) ◽  
pp. 15726-15740 ◽  
Author(s):  
Julia Vallejo ◽  
Marta Viciano-Chumillas ◽  
Francisco Lloret ◽  
Miguel Julve ◽  
Isabel Castro ◽  
...  
Keyword(s):  
Magnetic Anisotropy ◽  
Magnetic Relaxation ◽  
Slow Magnetic Relaxation
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