A L Shashimohan
Articles written in Bulletin of Materials Science
Volume 3 Issue 2 July 1981 pp 201-208 Biswas Memorial Symposium On The Chemistry And Physics of Solids, Magnetism And Magnetic Properties Of Materials
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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