Anisotropic exchange interactions in hetero-one-dimensional Ln–M systems (Ln = Er,Yb; M = Cr,FeLS): Magnetometry and Dual Mode X-band Electron Paramagnetic Resonance spectroscopic studies |
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| Authors: | Vassilis Tangoulis Marta Estrader Albert Figuerola Joan Ribas Carmen Diaz |
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| Institution: | 1. Department of Chemistry, University of Patras, 26500 Patras, Greece;2. Departament de Quimica Inorganica i Institut de Nanociencia i Nanotecnologia, Universitat de Barcelona, Marti i Franques, 1-11, 08028 Barcelona, Spain |
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| Abstract: | A recently introduced experimental and theoretical procedure is presented in order to calculate the magnitude and anisotropy of interaction between a lanthanide and a 3d-metal ion. The general formula of the hetero-one-dimensional molecular compounds is trans-M(CN)4(μ-CN)2Ln(H2O)4(bpy)]n·nH2O · 1.5nbpy (M = Fe3+, Cr3+; Ln = Er3+, Yb3+), where bpy = 2,2′-bipyridine, abbreviated as LnM] from now on. The main parts of this procedure are: (a) the evaluation of the effective g-parameters of the lanthanide ion with the help of EPR measurements; (b) the use of dual-mode EPR spectroscopy to define the anisotropic exchange interactions with the help of an anisotropic Hamiltonian model; (c) use of the same magnetic model to fit magnetization and susceptibility data in order to verify the EPR findings. |
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| Keywords: | Dual mode EPR Anisotropic exchange interaction Lanthanides |
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