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      Investigation of magnetoelectric effect in lead free K 0.5Na 0.5NbO 3–BaFe 12O 19 novel composite system

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          Abstract

          Lead-free magnetoelectric composites (1– x)K 0.5Na 0.5NbO 3–( x)BaFe 12O 19 ( x = 30, 40, and 50 wt%) are synthesized using solid state reaction method. X-ray diffraction (XRD) patterns confirm formation of diphase composites. Field emission scanning electron microscopy (FE-SEM) gives information about grain size, connectivity, and microstructure of constituent phases. Dielectric parameters of composite samples are studied as a function of temperature and the transition temperatures corresponding to both the constituent phases are observed in the composite samples. Dielectric constant has been found to decrease with addition of ferrite. Room temperature multiferroic behaviour has been confirmed using P–E and M–H hysteresis loops and magnetoelectric measurement. Polarization is found to decrease; however, magnetization increases with ferrite weight percentage. The highest α ME of 4.08 mV/(cm·Oe) is obtained for x = 30 wt% composite and it is realized that ferrite content significantly affects magnetoelectric behaviour.

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          Author and article information

          Journal
          J Adv Ceram
          Journal of Advanced Ceramics
          Tsinghua University Press and Springer-Verlag Berlin Heidelberg (USA )
          2227-8508
          2226-4108
          01 September 2019
          01 October 2019
          : 8
          : 3
          : 333-344
          Affiliations
          aSmart Materials Research Laboratory, Department of Physics, Indian Institute of Technology Roorkee, Roorkee 247667, India
          bNational Physical Laboratory, New Delhi, Delhi 110012, India
          Author notes
          *Corresponding author: Yogesh KUMAR, E-mail: deepyogesh@ 123456gmail.com
          Article
          s40145-019-0315-7
          10.1007/s40145-019-0315-7
          Copyright © The Author(s)

          This is an open-access article distributed under the terms of the Creative Commons Attribution 4.0 International License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. See https://creativecommons.org/licenses/by/4.0/.

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