Abstract
Ferromagnetic La0.7Ba0.3MnO3 (LBMO), La0.7Sr0.3MnO3 (LSMO) and La0.7Pb0.3MnO3 (LPMO) nanoparticles (NPs) were prepared by sol-gel auto-combustion method. Microstructural analysis of these NPs was done using electron microscopy. The variation of crystallite size and the corresponding lattice strain of the prepared NPs were analyzed with Williamson-Hall plot. Elemental composition and oxidation states of the prepared NPs were analyzed with x-ray photoelectron spectroscopy. Comparative studies on the variation of ∠Mn-O-Mn bond angle and the Mn-O bond length with the increase of mean radius of A-site ion are reported which in turn alter the structural and magnetic properties of LBMO, LSMO and LPMO NPs. Further, 0.5 vol% (0–3) LBMO/P(VDF-TrFE), LSMO/P(VDF-TrFE) and LPMO/P(VDF-TrFE) flexible nanocomposite films were prepared by solution casting method and these were used to show direct magnetoelectric effect-based energy harvesting from magnetic noise generated from cooling/exhaust fan and electric cable wire carrying current at 50 Hz.
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