Title:	Electric, magnetic and optical limiting (short pulse and ultrafast) studies in phase pure (1 − x)BiFeO3–xNaNbO3 multiferroic nanocomposite synthesized by the pechini method
Authors:	Ummer, Rehana P. Sreekanth, P. Raneesh, B. Philip, Reji Rouxel, Didier Thomas, Sabu Kalarikkal, Nandakumar
Issue Date:	30-Jul-2015
Publisher:	Royal Society of Chemistry
Citation:	RSC Advance, 2015, Vol. 5, p67157-67164
Abstract:	The perovskite (1 − x)BiFeO3–xNaNbO3 nanocomposite was successfully synthesized by Pechini method and crystallographic information was obtained from XRD and TEM analysis. Structural analysis using XRD and TEM shows that phase pure samples were obtained with reduced particle size. The observations reveal that particle size plays a crucial role in deciding the electric and magnetic properties. The multiferroic character of nanoparticles is confirmed through magneto electric (ME) coupling studies. The good coexistence of ferroelectric and ferromagnetic behaviors in the composite provides the possibility to achieve a measurable ME effect. The highest value of the magneto electric coefficient (α) is observed for x = 0.1 (α = 0.13 V cm−1 Oe−1) and it reduces for higher x values. Magnetization measurements for x = 0.1 show a small hysteresis at 6 K which also confirms the presence of the magnetic phase at low temperature while the usual antiferromagnetic behavior of BFO is found at 300 K. The reduced size and absence of impurity could be the reason for the enhancement in electrical properties. Low loss tangent values observed in the samples display a remarkable improvement. Open aperture Z-scan measurements reveal a nonlinear absorption behavior, which results in good optical limiting when excited with short pulse (nanosecond) as well as ultrafast (femtosecond) laser pulses.
Description:	Restricted Access.
URI:	http://hdl.handle.net/2289/6359
ISSN:	2046-2069 (Online)
Alternative Location:	http://dx.doi.org/10.1039/C5RA10422J
Copyright:	2015 Royal Society of Chemistry
Appears in Collections:	Research Papers (LAMP)

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