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LACAME 2006 pp 91-94 | Cite as

Mössbauer investigation of magnetite nanoparticles incorporated in a mesoporous polymeric template

  • A. F. R. RodriguezEmail author
  • V. K. Garg
  • A. C. Oliveira
  • D. Rabelo
  • P. C. Morais

Abstract

Mössbauer spectroscopy was used in this study to investigate magnetite-based nanocomposites, using mesoporous styrene-divinylbenzene (Sty-DVB) microspheres as the hosting template. The magnetite content was increased in the polymeric template by performing several in situ chemical reactions (one to six cycles) in the hosting material. We found the Mössbauer linewidth associated to site-A increasing with the relative increase of iron in site-A. The Mössbauer linewidth associated to site-B decreases with the relative decrease of iron in site-B. We explain our findings by assuming local change in the homogeneity associated to changes in the relative iron population in sites A and B.

Keywords

Magnetite nanoparticle Polymeric nanocomposite Mössbauer linewidth 

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Copyright information

© Springer Science + Business Media B.V. 2008

Authors and Affiliations

  • A. F. R. Rodriguez
    • 1
    Email author
  • V. K. Garg
    • 1
  • A. C. Oliveira
    • 1
  • D. Rabelo
    • 2
  • P. C. Morais
    • 1
  1. 1.Instituto de Física, Núcleo de Física AplicadaUniversidade de BrasíliaBrasíliaBrazil
  2. 2.Instituto de QuímicaUniversidade Federal de GoiásGoiâniaBrazil

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