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Magnetic properties of lanthanum orthoferrite fine powders prepared by different chemical routes

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Abstract

Fine powders of lanthanum iron oxide, LaFeO3, have been prepared by solid state reaction as well as sol-gel synthesis and nebulized spray pyrolysis. Structures, morphologies and magnetic susceptibility measurements of these powders have been examined. The powders prepared by all the three low-temperature routes contain nearly spherical particles with an average diameter of 40 nm. These samples show a lower Neel temperature than the powder prepared by solid state reaction besides showing much lower magnetic susceptibility at low temperatures.

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Authors and Affiliations

  1. Chemistry and Physics of Materials Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, 560 064, Bangalore, India

    Benedict Ita, P. Murugavel, V. Ponnambalam & A. R. Raju

  2. Chemistry Department, University of Calabar, Calabar, Nigeria

    Benedict Ita

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  1. Benedict Ita
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  2. P. Murugavel
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  3. V. Ponnambalam
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  4. A. R. Raju
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Correspondence to A. R. Raju.

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Dedicated to Professor C N R Rao on his 70th birthday

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Ita, B., Murugavel, P., Ponnambalam, V. et al. Magnetic properties of lanthanum orthoferrite fine powders prepared by different chemical routes. J Chem Sci 115, 519–524 (2003). https://doi.org/10.1007/BF02708243

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