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      Permanent link:
      https://www.ias.ac.in/article/fulltext/jcsc/118/06/0513-0518

    • Keywords

       

      Reverse micellar synthesis; nanomaterials; magnetism; rare-earth manganites

    • Abstract

       

      Nanoparticles of complex manganites (viz. LaMnO3, La0.67Sr0.33MnO3 and La0.67Ca{0.33}MnO3) have been synthesized using the reverse micellar route. These manganites are prepared at 800‡C and the monophasic nature of all the oxides has been established by powder X-ray diffraction studies. TEM studies show an average grain size of 68, 80 and 50 nm for LaMnO3, La0.67Sr0.33MnO3 and La0.67Ca{0.33}MnO3respectively. Ferromagnetic ordering is observed at around 250 K for LaMnO3, 350 K for La0.67Sr0.33MnO3 and 200 K for La0.67Ca{0.33}MnO3. These Curie temperatures correspond well with those reported for bulk materials with similar composition.

    • Author Affiliations

       

      Tokeer Ahmad1 Kandalam V Ramanujachary2 Samuel E Lofland2 Ashok K Ganguli1

      1. Department of Chemistry, Indian Institute of Technology, Hauz Khas, New Delhi - 110 016
      2. Centre for Materials Research and Education, Rowan University, 201 Mullica Hill Road, Glassboro, NJ - 08028, USA
    • Dates

       
  • Journal of Chemical Sciences | News

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