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


Ontology type: schema:ScholarlyArticle      Open Access: True


Article Info

DATE

2012-11

AUTHORS

SHILPI BANERJEE, ANINDYA DATTA, ASIM BHAUMIK, DIPANKAR CHAKRAVORTY

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. More... »

PAGES

919-924

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s12034-012-0392-5

DOI

http://dx.doi.org/10.1007/s12034-012-0392-5

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1016944273


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