• Phase change induced by polypyrrole in iron-oxide polypyrrole nanocomposite

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      https://www.ias.ac.in/article/fulltext/boms/024/06/0563-0567

    • Keywords

       

      Polypyrrole; iron oxide; nanocomposite; sol-gel.

    • Abstract

       

      Nanocomposites of polypyrrole and iron oxide were prepared using simultaneous gelation and polymerization processes. Varied amounts of pyrrole monomer were added to a solution containing iron nitrate as precursor and 2-methoxy ethanol as solvent. The presence of oxide and polypyrrole was confirmed by using X-ray and FTIR techniques. Some of these nanocomposites exhibited magnetic behaviour. SEM studies of powders indicated presence of nanosized particles. Electrical conductivity studies of powders showed a slight variation in conductivity for lower concentration of pyrrole, with a sudden increase in conductivity at 15% of pyrrole concentration. A transition from a nonmagnetic to magnetic phase was also observed at the same concentration.

    • Author Affiliations

       

      Komilla Suri1 S Annapoorni1 R P Tandon1

      1. Department of Physics and Astrophysics, University of Delhi, Delhi 110 007, India
    • Dates

       
  • Bulletin of Materials Science | News

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