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Magnetism in some layer molecular magnets as revealed by Mössbauer spectroscopy

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Abstract

57Fe Mössbauer spectroscopy was used to explore magnetic properties of two 2D molecular ferrimagnets. In NPn4[FeIIFeIII(ox)3] (Pn = n-C5H11, (ox) =(C2O4)2−), the previously reported negative magnetization is shown here by external field studies to be due to a cross-over between FeIII and FeII- magnetizations. The form and parameters of the magnetic Hamiltonian describing the temperature dependence of both the FeIII hf-field and net magnetizations has been determined. In NBu4[MnIIFeIII(ox)3] (Bu = n-C4H9) soft XY-magnet the low temperature relaxation spectra are interpreted in terms of slowly varying classical magnetization-evolution at low temperature.

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Authors and Affiliations

  1. KFKI, Research Institute for Particle and Nuclear Physics, P.O.B. 49, H-1525, Budapest, Hungary

    L. Bottyán

  2. Institute of Problems of Chemical Physics RAS, Chernogolovka, 142432, Russia

    N.S. Ovanesyan, A.A. Pyalling & N.A. Sanina

  3. L.D. Landau Institute for Theoretical Physics RAS, Chernogolovka, 142432, Russia

    A.B. Kashuba

Authors
  1. L. Bottyán
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  2. N.S. Ovanesyan
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  3. A.A. Pyalling
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  4. N.A. Sanina
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  5. A.B. Kashuba
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Bottyán, L., Ovanesyan, N., Pyalling, A. et al. Magnetism in some layer molecular magnets as revealed by Mössbauer spectroscopy. Hyperfine Interactions 126, 149–154 (2000). https://doi.org/10.1023/A:1012657115015

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