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The fabrication of La-substituted bismuth titanate nanofibers by electrospinning
Minghua Tang1, Wei Shu, Feng Yang
1Key Laboratory of Low Dimensional Materials and Application Technology, Xiangtan University, Ministry of Education, Xiangtan, 411105, People's Republic of China. tangminghua@xtu.edu.cn
Abstract:
Bismuth titanates with La-substituted (Bi(3.25)La(0.75)Ti(3)O(12), BLT) nanofibers were synthesized by sol-gel based electrospinning. Pure phase perovskite structure BLT nanofibers could be obtained by annealing at 700 degrees C in air for 1 h. The morphology, crystallized phase and crystal structure were investigated by means of scanning electron microscopy, x-ray diffraction analysis and high resolution transmission electron microscopy, respectively. Nanofibers with fine crystallinity were observed with fiber diameters in the range of 100-300 nm and length over 150 microm. The ferroelectricity of BLT nanofibers has been confirmed by piezoresponse force microscopy. Excellent piezoelectricity of individual nanofibers has also been obtained.
