Linear Chains of Magnetic Ions Stacked with Variable Distance: Ferromagnetic Ordering with a Curie Temperature above 20 K

Stefan Friedländer, Jinxuan Liu, Matt Addicoat, Petko Petkov, Nina Vankova, Robert Rüger, Agnieszka Kuc, Wei Guo, Wencai Zhou, Binit Lukose, Zhengbang Wang, Peter G. Weidler, Andreas Pöppl, Michael Ziese, Thomas Heine, Christof Wöll

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

We have studied the magnetic properties of the SURMOF-2 series of metal–organic frameworks (MOFs). Contrary to bulk MOF-2 crystals, where Cu2+ions form paddlewheels and are antiferromagnetically coupled, in this case the Cu2+ions are connected via carboxylate groups in a zipper-like fashion. This unusual coupling of the spin 1/2 ions within the resulting one-dimensional chains is found to stabilize a low-temperature, ferromagnetic (FM) phase. In contrast to other ordered 1D systems, no strong magnetic fields are needed to induce the ferromagnetism. The magnetic coupling constants describing the interaction between the individual metal ions have been determined in SQUID experiments. They are fully consistent with the results of ab initio DFT electronic structure calculations. The theoretical results allow the unusual magnetic behavior of this exotic, yet easy-to-fabricate, material to be described in a detailed fashion.

Original languageEnglish
Pages (from-to)12683-12687
Number of pages5
JournalAngewandte Chemie - International Edition
Volume55
Issue number41
DOIs
Publication statusPublished - 2016

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)

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    Friedländer, S., Liu, J., Addicoat, M., Petkov, P., Vankova, N., Rüger, R., Kuc, A., Guo, W., Zhou, W., Lukose, B., Wang, Z., Weidler, P. G., Pöppl, A., Ziese, M., Heine, T., & Wöll, C. (2016). Linear Chains of Magnetic Ions Stacked with Variable Distance: Ferromagnetic Ordering with a Curie Temperature above 20 K. Angewandte Chemie - International Edition, 55(41), 12683-12687. https://doi.org/10.1002/anie.201606016