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      https://www.ias.ac.in/article/fulltext/pram/038/02/0171-0177

    • Keywords

       

      Fine particle systems; ferrimagnetics

    • Abstract

       

      Influence of the heat treatment, following a wet chemical process, has been examined on the sizes of the obtained particles of MnFe2O4. X-ray diffraction, magnetization and Mössbauer measurements have been used. The average sizes of the obtained particles are in the range of ∼ 100 Å–300Å with the upper size limit being ∼ 450 Å and more. The average size as well as size distribution is strongly influenced by the nature of the heat treatment followed for preparation of the sample. Prolonged hydrothermal heating resulted in larger average size than did dry heating at 400°C of the precipitate obtained from the initial wet process. Further dry heating following hydrothermal treatment did not lead to any major growth. Chemical nature of the starting materials also affects the sizes.

    • Author Affiliations

       

      S N Dolia1 Anjali Krishnamurthy1 Bipin K Srivastava1 Vipasha Ghose1

      1. Department of Physics, University of Rajasthan, Jaipur - 302 004, India
    • Dates

       
  • Pramana – Journal of Physics | News

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