Field-induced single-ion magnet behaviour of a hexacoordinated Co(ii) complex with easy-axis-type magnetic anisotropy
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, ; , ; , ; , ; , ; , ; , ; , ; PALII, Andrew; ALDOSHIN, Serghei. Field-induced single-ion magnet behaviour of a hexacoordinated Co(ii) complex with easy-axis-type magnetic anisotropy. In: Dalton Transactions. 2019, nr. 20(48), pp. 6960-6970. ISSN 1477-9226.
10.1039/c9dt00770a
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Dalton Transactions
Numărul 20(48) / 2019 / ISSN 1477-9226 /ISSNe 1477-9234

Field-induced single-ion magnet behaviour of a hexacoordinated Co(ii) complex with easy-axis-type magnetic anisotropy


DOI: 10.1039/c9dt00770a
Pag. 6960-6970

1, 1, 1, 1, 2, 3, 345, 2, Palii Andrew26, Aldoshin Serghei2
 
1 Southern Federal University, Rostov-on-Don,
2 Institute of Problems of Chemical Physics, Russian Academy of Sciences,
3 Lomonosov Moscow State University,
4 National University of Science and Technology ―MISiS, Moscow,
5 South Ural State University,
6 Institute of Applied Physics
 
Disponibil în IBN: 12 iunie 2019


Rezumat

A coordination compound with the composition [CoLCl 2 ]·H 2 O (L = bis-condensation product of diacetyl and 2-hydrazinyl-4,6-dimethylpyrimidine) was synthesized, in which the Co(ii) ion was hexacoordinated. Under applied DC fields, this compound exhibited single-ion magnet behavior. Two relaxation processes were observed when increasing the applied magnetic field from 1000 to 3200 Oe. The first relaxation (high-frequency) was observed both at 1000 Oe and 3200 Oe, while the second relaxation was only registered under a field of 3200 Oe at low frequencies (<1 Hz) and low temperatures (<5 K). Modeling of the magnetic DC properties using the Griffith Hamiltonian accompanied by quantum chemical calculations revealed easy-axis-type magnetic anisotropy with weak rhombic contributions.

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@article{ibn_60166,
author = {},
title = {<p><em>Dimensiunile școlii moderne</em></p>},
collection = {Managementul educaţional: realizări şi perspective de dezvoltare},
year = {2017},
volume = {Ediția 1-a},
pages = {64-68},
abstract = {(EN) <p><em>The school is an organization in which a pedagogic activity is realized in a institutionalized framework specialized in achieving micro structural and macro structural finalities of the process and system of teaching. </em>&nbsp;<em>School is an open system, an evolving organization which itself studies and produces learning. The main objective of school is education and forming of the young generation for future integration in society and easy adaptation to frequent changes which characterize modern society. Efficiency of the school organization relies on organizational climate, on the motivation and engagement of its members for optimizing activity, on the quality and type of applied management, in the relations between different compartments of the organization and each of its members, on the existence of a system for management communication which is flexible and efficient.</em></p>},
url = {https://ibn.idsi.md/vizualizare_articol/60166},
}