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Influence of fuel ratios on auto combustion synthesis of barium ferrite nano particles

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Abstract

Single-domain barium ferrite nano particles have been synthesized with narrow particle-size distribution using an auto combustion technique. In this process, citric acid was used as a fuel. Ratios of cation to fuel were maintained variously at 1:1, 1:2 and 1:3. The pH was 7 in all cases. Of all three cases, a cation to citric acid ratio of 1:2 gives better yield in the formation of crystalline and single domain particles with a narrow range of size distribution. Most particles are in the range of 80 to 100 nm. Maximum magnetization and coercivity values are also greater for 1:2 ratios. These values measured at room temperature are found to be 55 emu/gram and 5000 Oe respectively. XPS and ESR studies support the results.

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Authors and Affiliations

  1. Department of Metallurgical Engineering and Materials Science, Indian Institute of Technology, 400 076, Mumbai

    D. Bahadur, S. Rajakumar & Ankit Kumar

Authors
  1. D. Bahadur
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  2. S. Rajakumar
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  3. Ankit Kumar
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Correspondence to D. Bahadur.

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Dedicated to Prof J Gopalakrishnan on his 62nd birthday.

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Bahadur, D., Rajakumar, S. & Kumar, A. Influence of fuel ratios on auto combustion synthesis of barium ferrite nano particles. J Chem Sci 118, 15–21 (2006). https://doi.org/10.1007/BF02708761

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