Transactions of Nanjing University of Aeronautics & Astronautics
Structural and Piezoelectric Properties of Sr0.6Ba0.4Nb2O6 Micro-rods Synthesized by Molten-Salt Method
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Abstract:
Sr0.6Ba0.4Nb2O6 micro-rods are prepared by the molten-salt method with K2SO4, KCl-K2SO4, and KCl as fluxes. It reveals that the Sr0.6Ba0.4Nb2O6 synthesized with KCl as a flux exhibits a single phase with tetragonal tungsten bronze structure. The measurement of X-ray diffraction indicates that the Sr0.6Ba0.4Nb2O6 micro-rods synthesized at 1 300℃ are anisotropic. The morphology of the powers is examined by transmission electron microscope. It reveals that the length-diameter ratio of Sr0.6Ba0.4Nb2O6 micro-rods increases with increasing annealing temperature from 900℃ to 1 300℃. At 1 300℃, the rod possesses a large length-diameter ratio of 8:1. Moreover, the analysis of the piezoelectric properties of single micro-rods using a piezo-response force microscope indicates that the domains of the material are arranged along its radial direction.
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The work was supported by the National Natural Science Foundation of China (No. 11475086).
Clc Number:
CHINA AERO-SCIENCES
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