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Bulletin of Materials Science

, Volume 20, Issue 7, pp 975–980 | Cite as

A new inexpensive method for the preparation of acicular precursors for magnetic recording media

  • M R Anantharaman
  • K V Joseph
  • H V Keer
Article

Abstract

Magnetic materials meant for audio/video recording applications necessitate that polycrystalline materials be in acicular shape. So preparation of acicular precursors for magnetic storage materials assumes significance. The employment of aqueous solutions do not produce needle shape crystallites. Glycerol is one of the complexing media used for the precipitation of ferrous oxalate dihydrate. An inexpensive method using starch for preparation of acicular particles is described. The influence of an additive namely Gd on acicularity is also investigated.

Keywords

Magnetic recording media gamma ferric oxide acicular particles 

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References

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Copyright information

© The Indian Academy of Sciences 1997

Authors and Affiliations

  • M R Anantharaman
    • 1
  • K V Joseph
    • 1
  • H V Keer
    • 1
    • 2
  1. 1.Department of PhysicsCochin University of Science and TechnologyKochiIndia
  2. 2.Department of ChemistryIndian Institute of TechnologyMumbaiIndia

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