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Influence of chirality on the electron spin resonance in molecular magnets [MnII(HL)(H2O)][MnIII(CN)6] · 2H2O with chiral ligands L

  • Magnetism and Ferroelectricity
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Abstract

Chiral and racemic molecular ferrimagnets [MnII(HL)(H2O)][MnIII(CN)6] · 2H2O, where L = S-or R-1,2-diaminopropane for chiral samples (S-pn, R-pn) and L = rac-pn for racemic samples, are investigated by the electron spin resonance technique. It is revealed that the electron spin resonance spectra of the chiral and racemic samples differ from each other at temperatures below the Curie temperature T C = 21 K. The maximum in the temperature dependence of the integrated magnetic susceptibility χ(T) calculated by the double integration of the line centered at a negative field of −250 Oe for the racemic samples is broadened as compared to the maxima in the corresponding dependences for the enantiomers of the chiral samples with “right” (R) and “left” (S) symmetry. The new compounds under investigation differ from the previously synthesized crystals by the strong spin-orbit interaction between Mn3+ ions, which leads to a dependence of their magnetic properties on the chirality of the structure.

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Authors and Affiliations

  1. Institute of Problems of Chemical Physics, Russian Academy of Sciences, pr. Akademika Semenova 1, Chernogolovka, Moscow oblast, 142432, Russia

    R. B. Morgunov, F. B. Mushenok & M. V. Kirman

  2. Orenburg State University, pr. Pobedy 13, Orenburg, 460018, Russia

    R. B. Morgunov & F. B. Mushenok

Authors
  1. R. B. Morgunov
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  2. F. B. Mushenok
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  3. M. V. Kirman
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Correspondence to R. B. Morgunov.

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Original Russian Text © R.B. Morgunov, F.B. Mushenok, M.V. Kirman, 2008, published in Fizika Tverdogo Tela, 2008, Vol. 50, No. 7, pp. 1252–1256.

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Morgunov, R.B., Mushenok, F.B. & Kirman, M.V. Influence of chirality on the electron spin resonance in molecular magnets [MnII(HL)(H2O)][MnIII(CN)6] · 2H2O with chiral ligands L . Phys. Solid State 50, 1303–1307 (2008). https://doi.org/10.1134/S1063783408070172

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  • DOI: https://doi.org/10.1134/S1063783408070172

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