论文部分内容阅读
Sr0.6Ba0.4 Nb2O6 micro-rods are prepared by the molten-salt method with K2 SO4,KC1-K2SO4,and KC1 as fluxes.It reveals that the Sr0.6Ba0.4Nb2O6 synthesized with KC1 as a flux exhibits a single phase with tetragonal tungsten bronze structure.The measurement of X ray diffraction indicates that the Sr0.6 Ba0.4Nb2 O6 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 Sr0.6 Ba0.4 Nb2 O6 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.