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      https://www.ias.ac.in/article/fulltext/boms/043/0247

    • Keywords

       

      Magnetoelectric coupling; ferroelectricity; ferromagnetism; dielectric.

    • Abstract

       

      Ferroelectric–magnetic composites of SrBi$_2$Nb$_2$O$_9$–CoFe$_2$O$_4$ (SBN–CFO) were synthesized via conventional solid state reaction route. The powder X-ray diffraction, Raman spectroscopy and scanning electron microscopy measurements confirm the existence of two chemically separated phases and phase purity in the SBN–CFO composites. Magnetization measurements confirm the enhanced values of the magnetic parameters. The change in the area of theferroelectric P vs. E loops with frequency confirms the enhanced ferroelectric nature of the SBN–CFO composites. The quantified maximum values of magnetoelectric coefficient ($\alpha$) are observed from the $P$ vs. $E$ loop measurements in the influence of applied magnetic field and found to be 4.475 mV cm$^{-1}$ Oe$^{-1}$ at 688 Oe for SBN–0.1CFO and 3.389 mV cm$^{-1}$ Oe$^{-1}$ at 1000 Oe for SBN–0.2CFO composites, respectively. The shifting in the peaks of temperature-dependent dielectric maxima towards the higher temperature side confirms the relaxor behaviour in the SBN–CFO composite samples.

    • Author Affiliations

       

      PRACHI CHAUDHARY1 SAMIKSHA DABAS1 MANISH KUMAR2 ARVIND KUMAR2 O P THAKUR1

      1. Material Analysis and Research Laboratory, Department of Physics, NSUT, New Delhi 110078, India
      2. Experimental Research Laboratory, Department of Physics, ARSD College, University of Delhi, New Delhi 110021, India
    • Dates

       
  • Bulletin of Materials Science | News

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      Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
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      Posted on July 25, 2019

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