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2012 | 10 | 1 | 166-171
Tytuł artykułu

Interaction between magnetic agglomerates and an extended free radicals network studied by magnetic resonance

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
Solids containing an extended network of free radicals have been prepared and studied by magnetic resonance techniques in the 4–290 K temperature range. One solid contained additionally a small amount of magnetic γ-Fe2O3 in the form of nanoparticle agglomerates. The solid without agglomerates displayed only a narrow, single resonance line centered at g eff = 2.0043. The magnetic resonance measurements of the solid with γ-Fe2O3 agglomerates gave a spectrum composed of two lines attributed to two different magnetic centers: a narrow line due to free radicals and a broad line arising from magnetic iron oxide agglomerates. In the high temperature range the integrated intensities of both lines decreased with decreasing temperature. The resonance field of the broad line shifted to lower magnetic fields upon lowering the temperature with the gradient ΔH r/ΔT = 2.3 G/K, while the narrow line shifted towards higher magnetic fields. The linewidth of the broader line increased with decreasing temperature while for the narrow lines in both samples this change was small. The magnetic iron oxide clusters produce a magnetic field which acts on the free radicals network and its strength depends essentially on the concentration of clusters. The reorientation process in the free radicals network is more intense in the sample without magnetic clusters.
Wydawca

Czasopismo
Rocznik
Tom
10
Numer
1
Strony
166-171
Opis fizyczny
Daty
wydano
2012-02-01
online
2011-12-03
Twórcy
autor
  • Institute of Physics, West Pomeranian University of Technology, Al. Piastow 48, 70-311, Szczecin, Poland
autor
  • Institute of Physics, West Pomeranian University of Technology, Al. Piastow 48, 70-311, Szczecin, Poland, typjan@zut.edu.pl
  • Institute of Physics, West Pomeranian University of Technology, Al. Piastow 48, 70-311, Szczecin, Poland
  • Institute of Physics, West Pomeranian University of Technology, Al. Piastow 48, 70-311, Szczecin, Poland
  • NCSR “Demokritos”, Aghia Paraskevi, Attikis, Athens, Greece
Bibliografia
  • [1] L. Groenendall et al., Chem. Mater. 10, 226 (1998) http://dx.doi.org/10.1021/cm970344x[Crossref]
  • [2] J. P. Majoral, A. M. Caminade, Chem. Rev. 99, 845 (1999) http://dx.doi.org/10.1021/cr970414j[Crossref]
  • [3] A. B. Bourlinos et al., Eur. Polym. J. 42, 2940 (2006) http://dx.doi.org/10.1016/j.eurpolymj.2006.07.025[Crossref]
  • [4] G. Blotny, Tetrahedron 62, 9507 (2006) http://dx.doi.org/10.1016/j.tet.2006.07.039[Crossref]
  • [5] M. Shahid, R. S. Ashraf, E. Klemm, S. Sensfuss, Macromolecules 39, 7844 (2006) http://dx.doi.org/10.1021/ma061231e[Crossref]
  • [6] R. Y. C. Shin et al., Chem. Mater. 19, 1892 (2007) http://dx.doi.org/10.1021/cm070144d[Crossref]
  • [7] H. K. C. Pandya, Z. I. Niazimbetova, F. L. Beyer, M. E. Galvin, Chem. Mater. 19, 993 (2007) http://dx.doi.org/10.1021/cm060524j[Crossref]
  • [8] P. Dallas et al., Polymer 49, 1137 (2008) http://dx.doi.org/10.1016/j.polymer.2008.01.030[Crossref]
  • [9] P. Dallas et al., Polymer 48, 3162 (2007) http://dx.doi.org/10.1016/j.polymer.2007.03.055[Crossref]
  • [10] P. Dallas et al., Polymer 48, 2007 (2007) http://dx.doi.org/10.1016/j.polymer.2007.01.058[Crossref]
  • [11] A. B. Bourlinos et al., Carbon 44, 1906 (2006) http://dx.doi.org/10.1016/j.carbon.2006.02.008[Crossref]
  • [12] N. Guskos, G. Zolnierkiewicz, J. Typek, A. Guskos, D. Petridis, J. Non-Cryst. Solids 354, 4211 (2008) http://dx.doi.org/10.1016/j.jnoncrysol.2008.06.035[Crossref]
  • [13] N. Guskos, G. Zolnierkiewicz, J. Typek, A. Guskos, D. Petridis, Rev. Adv. Mater. Sci. 23, 164 (2010)
  • [14] N. Guskos, J. Typek, E. A. Anagnostakis, A. Blonska-Tabero, M. Bosacka, J. Alloy. Compd. 471, 28 (2009) http://dx.doi.org/10.1016/j.jallcom.2008.03.109[Crossref]
  • [15] N. Guskos, G. Zolnierkiewicz, A. Guskos, J. Typek, J. Blyszko, W. Kiernozycki, U. Narkiewicz, M. Podsiadly, J. Non-Cryst. Solids 354, 4510 (2008) http://dx.doi.org/10.1016/j.jnoncrysol.2008.06.067[Crossref]
  • [16] V. Likodimos, S. Glenis, N. Guskos, C. L. Lin, Phys. Rev. B 68, 045417 (2003) http://dx.doi.org/10.1103/PhysRevB.68.045417[Crossref]
  • [17] V. Likodimos, S. Glenis, N. Guskos, C. L. Lin, Phys. Rev. B 76, 075420 (2007) http://dx.doi.org/10.1103/PhysRevB.76.075420[Crossref]
Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.-psjd-doi-10_2478_s11534-011-0085-5
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