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Preparation and characterisation of γ-Fe2O3 as tape recording material

  • Biswas Memorial Symposium On The Chemistry And Physics of Solids
  • Magnetism And Magnetic Properties Of Materials
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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.

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Authors and Affiliations

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

    K Seshan, M R Anantharaman, Venkatesh Rao, A L Shashimohan, H V Keer & D K Chakrabarty

Authors
  1. K Seshan
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  2. M R Anantharaman
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  3. Venkatesh Rao
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  4. A L Shashimohan
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  5. H V Keer
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  6. D K Chakrabarty
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Seshan, K., Anantharaman, M.R., Rao, V. et al. Preparation and characterisation of γ-Fe2O3 as tape recording material. Bull. Mater. Sci. 3, 201–208 (1981). https://doi.org/10.1007/BF02908495

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  • DOI: https://doi.org/10.1007/BF02908495

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