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      https://www.ias.ac.in/article/fulltext/boms/003/02/0201-0208

    • Keywords

       

      γ-Fe2O3; tape recording material; preparation

    • Abstract

       

      Optimum conditions for the preparation of tape recording quality γ-Fe2O3 by the thermal decomposition of ferrous oxalate dihydrate have been established. Formation of the intermediate Fe3O4 which is most important in forming γ-Fe2O3 takes place only in the presence of water vapour. Various stages of decomposition have been characterised by DTA, TG, DTG, and x-ray powder diffraction. The method for the preparation of acicular γ-Fe2O3 that matches very well with the commercial tape recording material has been developed.

    • Author Affiliations

       

      K Seshan1 M R Anantharaman1 Venkatesh Rao1 A L Shashimohan1 H V Keer1 D K Chakrabarty1

      1. Chemistry Department, Indian Institute of Technology, Bombay - 400 076, India
    • Dates

       
  • Bulletin of Materials Science | News

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