Preparation and characterisation of γ-Fe2O3 as tape recording material | Zendy

K. Seshan | Zendy; M. R. Anantharaman | Zendy; V. Shankar Rao | Zendy; A. L. Shashimohan | Zendy; H. V. Keer | Zendy; D. K. Chakrabarty | Zendy

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Preparation and characterisation of γ-Fe2O3 as tape recording material

Author(s) -

K. Seshan,

M. R. Anantharaman,

V. Shankar Rao,

A. L. Shashimohan,

H. V. Keer,

D. K. Chakrabarty

Publication year - 1981

Publication title -

bulletin of materials science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.35

H-Index - 72

eISSN - 0973-7669

pISSN - 0250-4707

DOI - 10.1007/bf02908495

Subject(s) - acicular , materials science , thermal decomposition , decomposition , ferrous , oxalate , diffraction , composite material , metallurgy , inorganic chemistry , optics , microstructure , organic chemistry , chemistry , physics

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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