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Influence of zeolite water on paramagnetic and ferromagnetic resonances in the Co2[Nb(CN)8] · 8H2O molecular magnet

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Abstract

The contributions of Co2+ and Nb4+ ions to the high-frequency dynamic magnetic susceptibility of the Co2[Nb(CN)8] · 8H2O molecular magnet in the paramagnetic state at T > 12 K are separated. It is found that the ferromagnetic ordering, which leads to the reconstruction of the electron paramagnetic resonance spectrum into the ferromagnetic resonance spectrum, occurs at T < 12 K. The influence of zeolite water on the spectra of the paramagnetic and ferromagnetic resonances is found. Dehydration leads to a decrease in the time of the spin relaxation of the ferromagnetic system from 50 ps to 17 ps at T = 4 K and to the variation in the temperature dependences of the widths of the lines and g factors in the electron spin resonance spectra.

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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

    A. I. Dmitriev, O. V. Koplak, M. V. Kirman & R. B. Morgunov

  2. The University of Tokyo, Tokyo, 113-8654, Japan

    H. Tokoro & S. Ohkoshi

Authors
  1. A. I. Dmitriev
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  2. O. V. Koplak
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  3. M. V. Kirman
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  4. H. Tokoro
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  5. S. Ohkoshi
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  6. R. B. Morgunov
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Corresponding author

Correspondence to R. B. Morgunov.

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Original Russian Text © A.I. Dmitriev, O.V. Koplak, M.V. Kirman, H. Tokoro, S. Ohkoshi, R.B. Morgunov, 2013, published in Fizika Tverdogo Tela, 2013, Vol. 55, No. 8, pp. 1552–1556.

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Dmitriev, A.I., Koplak, O.V., Kirman, M.V. et al. Influence of zeolite water on paramagnetic and ferromagnetic resonances in the Co2[Nb(CN)8] · 8H2O molecular magnet. Phys. Solid State 55, 1663–1667 (2013). https://doi.org/10.1134/S1063783413080088

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  • DOI: https://doi.org/10.1134/S1063783413080088

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