Short Communication

Magnetocaloric Effect in a Mn2-Pyridazine-[Nb(CN)8] Molecular Magnetic Sponge

  1. Magdalena Fitta1,
  2. Robert Pełka1,
  3. Maria Bałanda1,
  4. Mariusz Czapla1,
  5. Marian Mihalik2,
  6. Dawid Pinkowicz3,
  7. Barbara Sieklucka3,
  8. Tadeusz Wasiutyński1,
  9. Maria Zentkova2

Article first published online: 24 JUL 2012

DOI: 10.1002/ejic.201200374

Issue

European Journal of Inorganic Chemistry

European Journal of Inorganic Chemistry

Volume 2012, Issue 24, pages 3830–3834, August 2012

Additional Information

How to Cite

Fitta, M., Pełka, R., Bałanda, M., Czapla, M., Mihalik, M., Pinkowicz, D., Sieklucka, B., Wasiutyński, T. and Zentkova, M. (2012), Magnetocaloric Effect in a Mn2-Pyridazine-[Nb(CN)8] Molecular Magnetic Sponge. Eur. J. Inorg. Chem., 2012: 3830–3834. doi: 10.1002/ejic.201200374

Author Information

  1. 1

    Institute of Nuclear Physics Polish Academy of Sciences, 31-342 Kraków, Poland

  2. 2

    Institute of Experimental Physics Slovak Academy of Sciences, 04353 Košice, Slovakia

  3. 3

    Faculty of Chemistry, Jagiellonian University, 30-060 Kraków, Poland

Publication History

  1. Issue published online: 14 AUG 2012
  2. Article first published online: 24 JUL 2012
  3. Manuscript Received: 14 APR 2012

Funded by

  • Polish National Science Centre. Grant Number: 2011/01/B/ST5/00716
  • Slovak Scientific Grant Agency

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Keywords:

  • Molecular magnets;
  • Magnetic properties;
  • Manganese;
  • Niobium;
  • Multifunctional materials

Abstract

A comprehensive study of the magnetocaloric effect (MCE) in the Mn2-[Nb(CN)8] molecular magnet with a two-step magnetic sponge behavior is reported. The structural transformations provoked by dehydration bring about an increase in the magnetic ordering temperature (Tc) from 43 K through to 68 K and up to 98 K. All three phases are soft isotropic ferrimagnets. The change in magnetic entropy in the partially and fully dehydrated phases is smaller than that in the “as synthesized” form by a factor of 0.6. The field dependence of MCE at Tc is consistent with the values of the critical exponents derived from the magnetization data.

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