Abstract
Lead-free piezoelectric (Bi0.5Na0.5)0.92Ba0.08TiO3, doped with 5 mol %BiFeO3 (BNT-BT-BFO) nanowires was prepared from its corresponding precursor sol. A polycarbonate membrane with the thickness of 30 μm and the pore diameter of 100 nm was used as template. Nanowires with average diameter of ~80 nm and different lengths of a few microns were prepared from BNT-BT-BFO precursor sol with ~0.03 M concentration. Ferroelectric and piezoelectric characterizations of BNT-BT-BFO nanowires were performed using AFM-PFM equipment. The HR-TEM micrograph of nanocrystals, SAED patterns, and XRD pattern indicated that BNT-BT-BFO nanowires crystallized on the lattice of rhombohedral (Na0.5Bi0.5TiO3) phase. The BNT-BT-BFO nanowires showed a significant piezoelectric response, suggesting a good piezoelectric behavior. The saturation magnetization of the nanowires, measured at room temperature and at 5 kOe magnetic field, was Ms = 0.061 emu/g. A saturated ferromagnetic hysteresis loop has been also obtained.
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The authors gratefully acknowledge the Sectorial Operational Programme Human Resources Development, financed from the European Social Fund and by the Romanian Government under the contract number POSDRU/107/1.5/S/76813 for financial support.
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Cernea, M., Trupina, L., Vasile, B.S. et al. BiFeO3 doped-BNT-BT0.08 piezoelectric and magnetic nanowires, derived from sol–gel precursor. J Nanopart Res 16, 2231 (2014). https://doi.org/10.1007/s11051-013-2231-z
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DOI: https://doi.org/10.1007/s11051-013-2231-z