• Preparation and study of structural electrical and magnetic properties of La2SrFe2O7 and La2SrMn2O7

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      https://www.ias.ac.in/article/fulltext/jcsc/107/03/0189-0196

    • Keywords

       

      La2SrFe2O7; La2SrMn2O7; structure, magnetic and electric transport properties

    • Abstract

       

      Ruddlesden-Popper type phases La2SrFe2O7 and La2SrMn2O7 have been prepared by traditional ceramic method and their crystal structure has been determined by powder X-ray diffraction study. The iron compound has a tetragonal unit cell witha=3·916 Å andc=20·463 Å, while the phase containing manganese hasa=3·868 Å andc=20·205 Å in the space groupI4/mmm. La2SrMn2O7 is ferromagnetic in the temperature 77–300 K and exhibits spin state transition above 210K, while La2SrFe2O7 is antiferromagnetic. Both the phases are insulators and electrical conduction in La2SrMn2O7 is a function of transition in magnetic behaviour of the metal ion Mn3+, while insulator behaviour is more pronounced in La2SrFe2O7.

    • Author Affiliations

       

      Indu Bhushan Sharma1 Devinder Singh1

      1. Department of Chemistry, University of Jammu, Jammu - 180 004, India
    • Dates

       
  • Journal of Chemical Sciences | News

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