Microstructure, Phase Transition, and Piezoelectric Properties of Cerium-Substituted Bismuth Titanate Nanofibers
Source: Journal of Electronic Materials, Volume 41, Number 4, April 2012 , pp. 651-655(5)
Abstract:Cerium-substituted bismuth titanate (BCT) nanofibers were synthesized using sol–gel-based electrospinning. The morphology, crystallized phase, and crystal structure of the nanofibers were characterized by scanning electron microscopy, x-ray diffraction, and transmission electron microscopy, respectively. Fine-crystallinity nanofibers with diameters in the range of 100 nm to 200 nm and length over 100 μm after annealing at 750°C for 1 h were obtained. The phase transition of the BCT nanofibers was investigated by thermal analysis, and the Curie temperature was found to be 540°C. A displacement–voltage “butterfly” curve with displacement maximum of 1.1 nm was observed by piezoresponse force microscopy, and the maximum value of the piezoelectric coefficient was up to 158 pm/V, being attributed to successful Ce co-substitution for both A- and B-sites based on Raman spectrum analysis.
Document Type: Research Article
Affiliations: 1: Key Laboratory of Low Dimensional Materials and Application Technology, Ministry of Education, Xiangtan University, Xiangtan, 411105, China 2: Key Laboratory of Low Dimensional Materials and Application Technology, Ministry of Education, Xiangtan University, Xiangtan, 411105, China, Email: email@example.com 3: ASIC R&D Center, School of Electronic Science and Engineering of National University of Defense Technology, Changsha, 410073, China 4: State Key Laboratory of Silicate Materials for Architecture, Wuhan University of Technology, Wuhan, 430070, China 5: Pacific Geoscience Centre, Geological Survey of Canada, 9860 West Saanich Road, Sidney, BC, V8L 4B2, Canada
Publication date: 2012-04-01