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High-Field ESR and Magnetization Study ofaNovel Macrocyclic Chelate Trinuclear Ni(II) Complex

High-Field ESR and Magnetization Study ofaNovel Macrocyclic Chelate Trinuclear Ni(II) Complex We have investigated magnetic properties of a novel macrocyclic chelate Ni(II) complex [Ni3(L)(OAc)2], by means of the static magnetization M and high field frequency tunable electron spin resonance (HF-ESR). Magnetic field B dependencies of M reveal the magnetic ground state with a total spin S $^{\mathit{tot}}_{0}=1$ and a strong antiferromagnetic coupling between three Ni(II) ions. HF-ESR measurements at frequencies ν=80–350 GHz and B up to 15 T yield a magnetic anisotropy gap of the order of 60 GHz (2.9 K) and a g-factor of 2.2. In addition, the modelling reveals a positive single ion anisotropy (D>0) corresponding to an easy plane situation for the Ni3 complex. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Low Temperature Physics Springer Journals

High-Field ESR and Magnetization Study ofaNovel Macrocyclic Chelate Trinuclear Ni(II) Complex

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References (5)

Publisher
Springer Journals
Copyright
Copyright © 2009 by Springer Science+Business Media, LLC
Subject
Physics; Magnetism, Magnetic Materials; Characterization and Evaluation of Materials; Condensed Matter Physics
ISSN
0022-2291
eISSN
1573-7357
DOI
10.1007/s10909-009-0095-5
Publisher site
See Article on Publisher Site

Abstract

We have investigated magnetic properties of a novel macrocyclic chelate Ni(II) complex [Ni3(L)(OAc)2], by means of the static magnetization M and high field frequency tunable electron spin resonance (HF-ESR). Magnetic field B dependencies of M reveal the magnetic ground state with a total spin S $^{\mathit{tot}}_{0}=1$ and a strong antiferromagnetic coupling between three Ni(II) ions. HF-ESR measurements at frequencies ν=80–350 GHz and B up to 15 T yield a magnetic anisotropy gap of the order of 60 GHz (2.9 K) and a g-factor of 2.2. In addition, the modelling reveals a positive single ion anisotropy (D>0) corresponding to an easy plane situation for the Ni3 complex.

Journal

Journal of Low Temperature PhysicsSpringer Journals

Published: Dec 25, 2009

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