Abstract

Nd-substituted bismuth titanate (Bi 3.15Nd 0.85Ti 3O 12, BNT) nanofibers were synthesized by electrospinning method utilizing a solution that contained poly(vinylpyrrolidone) (PVP) and sol–gel precursor solution of BNT. The BNT/PVP composite fibers were calcined in air for 1 h at 500, 600, 700, 750, and 800 ∘ C , respectively. Scanning electron microscopy, X-ray diffraction, and Fourier transform infrared spectroscopy were used to characterize the as-synthesized and calcined BNT/PVP composite nanofibers. The experimental results showed that the diameter, morphology, and crystallization of the nanofibers are influenced by the calcination temperature. After calcination at 700 ∘ C , BNT fibers are fully crystallized and exhibit a polycrystalline bismuth-layered perovskite structure, with a diameter of 70–160 nm and a length of over 6 μ m .

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