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Influence of Sm and Nb on the structural, electric, magnetic and magneto-electric properties of BaTiO3-Li0.5Fe2.5O4 composite ceramics grown by the conventional solid state technique

  • Ganapathi Rao GajulaEmail author
  • Lakshmi Rekha Buddiga
  • K. N. Chidambara Kumar
  • Madhavaprasad Dasari
Article
  • 27 Downloads

Abstract

The Sm and Nb doped BaTiO3-Li0.5Fe2.5O4 composite ceramics having chemical formulae (90)BaTi(1−2x)NbxSmxO3 + (10) Li0.5Fe2.5O4 (x = 0, 0.05 and 0.1) were synthesized using conventional solid state technique. The structural, morphological, magnetic, dielectric, ferroelectric and magneto-electric properties of composites have been studied. The XRD measurement reveals the absence of peaks pertaining to impurities and strongly confirms the high crystalline nature of all the composites. From FESEM images, the average grain size of composites increases with increase in the concentration of Nb and Sm. The VSM studies confirm the soft magnetic nature of all the composites. The dielectric measurements confirm the increase in the transition temperature (Tc) of the BTL composite with an increase in the concentration of Nb and Sm. The P–E studies confirm that the ferroelectric nature of the BTL composite softens after doping Nb and Sm in it. The ME voltage coefficient value confirms the uniform growth of grains in all the composites and reveals a strong interaction between ferroelectric and magnetic orders.

Notes

Acknowledgements

We would like to thank Dr. P.D Babu for extending VSM (M-H, M-T) measurements at UGC-DAE Consortium for Scientific Research, Mumbai center, R5-shed, BARC, Mumbai—400 085. We would also like to thank Dr. V. Raghavendra Reddy and Dr. Mukul Gupta of UGC-DAE Consortium for Scientific Research, Indore for extending the facilities P-E loops and XRD and their support. We also thank INUP at IITB for extending the facilities FESEM, dielectric measurements.

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  • Ganapathi Rao Gajula
    • 1
    Email author
  • Lakshmi Rekha Buddiga
    • 2
  • K. N. Chidambara Kumar
    • 1
  • Madhavaprasad Dasari
    • 3
  1. 1.Department of Physics, BS&HSree Vidyanikethan Engineering CollegeTirupatiIndia
  2. 2.Department of ChemistryAndhra UniversityVisakhapatnamIndia
  3. 3.Department of PhysicsGIT, GITAM University (deemed to be university)VisakhapatnamIndia

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