High-Field ESR and Magnetization Study of a Novel Macrocyclic Chelate Trinuclear Ni(II) Complex
| Autor: | Anupama Parameswaran, Vladislav Kataev, Berthold Kersting, Norman Beyer, A. Alfonsov, Jochen Lach, Bernd Büchner, Mathias Gressenbuch, Rüdiger Klingeler, Yulia Krupskaya |
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| Rok vydání: | 2009 |
| Předmět: |
Materials science
Condensed matter physics Order (ring theory) Condensed Matter Physics Atomic and Molecular Physics and Optics law.invention Magnetic field Crystallography Magnetization Magnetic anisotropy law General Materials Science Ground state Electron paramagnetic resonance Spin (physics) Anisotropy |
| Zdroj: | Journal of Low Temperature Physics. 159:84-87 |
| ISSN: | 1573-7357 0022-2291 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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