Bulletin of Materials Science

, Volume 35, Issue 6, pp 919–924

Magneto-dielectric effect in Pb(Zr0·52Ti0·48)O3 filled nanoporous Ni0·5Zn0·5Fe2O4 composite

  • SHILPI BANERJEE
  • ANINDYA DATTA
  • ASIM BHAUMIK
  • DIPANKAR CHAKRAVORTY
Article

DOI: 10.1007/s12034-012-0392-5

Cite this article as:
BANERJEE, S., DATTA, A., BHAUMIK, A. et al. Bull Mater Sci (2012) 35: 919. doi:10.1007/s12034-012-0392-5

Abstract

Nanoporous Ni0·5Zn0·5Fe2O4 particles of diameter, ~ 9·5 nm, were synthesized by citric acid assisted thermal decomposition in an autoclave. The BET surface area measured was 80 m2 g − 1 and the average pore diameter was 2·5 nm. By soaking the particles in a suitable precursor solution and then subjecting them to a heat treatment at 923 K for 3 h, Pb(Zr0·52Ti0·48)O3 was grown within the nanopores. X-ray and electron diffraction studies confirmed the presence of both these phases. The nanocomposites showed ferromagnetic behaviour over the temperature range 2–300 K. No ferroelectric hysteresis loop could be found which was consistent with the earlier theoretical prediction of loss of ferroelectricity below a critical thickness of 2·4 nm. Good magneto-dielectric response of the order of 7% at a magnetic field of 9 kOe was recorded for the present system. This is believed to arise due to a negative magnetostriction coefficient of Ni0·5Zn0·5Fe2O4 which exerted a compressive strain on Pb(Zr0·52Ti0·48)O3 thereby lowering the tetragonality in its crystal structure.

Keywords

Magneto dielectric effect nanocomposites Pb(Zr0·52Ti0·48)O3 Ni0·5Zn0·5Fe2O4 

Copyright information

© Indian Academy of Sciences 2012

Authors and Affiliations

  • SHILPI BANERJEE
    • 1
    • 2
  • ANINDYA DATTA
    • 3
  • ASIM BHAUMIK
    • 2
  • DIPANKAR CHAKRAVORTY
    • 1
  1. 1.MLS Professor’s UnitIndian Association for the Cultivation of ScienceKolkataIndia
  2. 2.Department of Materials ScienceIndian Association for the Cultivation of ScienceKolkataIndia
  3. 3.University School of Basic and Applied Science (USBAS)Guru Govind Singh Indraprastha UniversityNew DelhiIndia

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