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

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    • Keywords


      Magnetic recording media; gamma ferric oxide; acicular particles

    • 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.

    • Author Affiliations


      M R Anantharaman1 K V Joseph1 H V Keer1 2

      1. Department of Physics, Cochin University of Science and Technology, Kochi - 682 022, India
      2. Department of Chemistry, Indian Institute of Technology, Mumbai - 400 076, India
    • Dates

  • Bulletin of Materials Science | News

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      Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
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