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2011 | 119 | 5 | 717-719
Article title

EPR Spectra of Multispin Systems. Application to Poly-m-p-Aniline

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Languages of publication
EN
Abstracts
EN
In this communication we present NiceMagnetic, software for simulations and analysis of EPR spectrum and SQUID measurements. Systems of arbitrary number N of spin-only magnetic moments (S ≤ 0 and L = 0) were considered within the lines of the Heisenberg and Zeeman Hamiltonians. Effective algorithms used for the computations are discussed. This includes modified secant method adapted to calculate resonance fields with demanded precision. Finally, application of NiceMagnetic to experimental SQUID magnetization and EPR spectra of poly-m-p-aniline, one of recently synthesized high spin polymers containing unpaired electrons will be presented. As a result, exchange integral between electron and nitrogen nuclei spins (ligand hyperfine interaction) J = 6.3 × 10^{-4} cm^{-1} was estimated.
Keywords
EN
Contributors
author
  • Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Hoża 69, 00-681 Warsaw, Poland
author
  • Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Hoża 69, 00-681 Warsaw, Poland
author
  • Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Hoża 69, 00-681 Warsaw, Poland
  • Faculty of Physics, Warsaw University of Technology, Koszykowa 75, 00-662 Warsaw, Poland
  • Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland
author
  • Institute of Electronic Materials Technology, Wólczyńska 133, 01-919 Warsaw, Poland
  • Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Hoża 69, 00-681 Warsaw, Poland
author
  • Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Hoża 69, 00-681 Warsaw, Poland
References
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  • 2. G. Morin, D. Bonnin, J. Magn. Reson. 136, 176 (1999)
  • 3. S. Stoll, A. Schweiger, J. Magn. Reson. 178, 42 (2006)
  • 4. A. Abragam, B. Bleaney, Electron Paramagnetic Resonance of Transition Ions, Clarendon Press, Oxford 1970
  • 5. S. Stoll, A. Schweiger, Chem. Phys. Lett. 380, 464 (2003)
  • 6. M.M. Wienk, R.A.J. Janssen, J. Am. Chem. Soc. 119, 4492 (1997)
  • 7. I. Kulszewicz-Bajer, M. Zagórska, I. Wielgus, M. Pawłowski, J. Gosk, A. Twardowski, J. Phys. Chem. B 111, 32 (2007)
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv119n545kz
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