Sr0.6 Ba0.4 Nb2 O6 micro-rods are prepared by the molten-salt method with K2 SO4,KCl-K2 SO4,and KCl as fluxes.It reveals that the Sr0.6 Ba0.4 Nb2 O6 synthesized with KCl as a flux exhibits a single phase with tetragon...Sr0.6 Ba0.4 Nb2 O6 micro-rods are prepared by the molten-salt method with K2 SO4,KCl-K2 SO4,and KCl as fluxes.It reveals that the Sr0.6 Ba0.4 Nb2 O6 synthesized with KCl as a flux exhibits a single phase with tetragonal tungsten bronze structure.The measurement of X-ray diffraction indicates that the Sr0.6 Ba0.4 Nb2 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 apiezo-response force microscope indicates that the domains of the material are arranged along its radial direction.展开更多
LaNiC2 was synthesized by a solvothermal route in a stainless steel autoclave at 600℃. In this process, nickel chloride, lanthanum chloride and toluene were used as raw materials, and metallic Na and Li alloy were us...LaNiC2 was synthesized by a solvothermal route in a stainless steel autoclave at 600℃. In this process, nickel chloride, lanthanum chloride and toluene were used as raw materials, and metallic Na and Li alloy were used as reductant. The products were characterized with an X-ray diffractometer （XRD） and a scanning electron microscope （SEM）. The LaNiC2 products consisted of a great deal of micro-rods. The micro-rods had diameters ranging from hundreds of nanometers to several micrometers and lengths ranging from several micrometers to tens of micrometers.展开更多
基金supported by the National Natural Science Foundation of China(No.11475086)
文摘Sr0.6 Ba0.4 Nb2 O6 micro-rods are prepared by the molten-salt method with K2 SO4,KCl-K2 SO4,and KCl as fluxes.It reveals that the Sr0.6 Ba0.4 Nb2 O6 synthesized with KCl as a flux exhibits a single phase with tetragonal tungsten bronze structure.The measurement of X-ray diffraction indicates that the Sr0.6 Ba0.4 Nb2 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 apiezo-response force microscope indicates that the domains of the material are arranged along its radial direction.
基金the Science and Technology Project of Guangdong Province(2KM02304G and 2005A11001001)Qian Bai Shi Project of Guangdong Province(Q02059)International Cooperation Project of Hubei Province(2006CA014)
文摘LaNiC2 was synthesized by a solvothermal route in a stainless steel autoclave at 600℃. In this process, nickel chloride, lanthanum chloride and toluene were used as raw materials, and metallic Na and Li alloy were used as reductant. The products were characterized with an X-ray diffractometer （XRD） and a scanning electron microscope （SEM）. The LaNiC2 products consisted of a great deal of micro-rods. The micro-rods had diameters ranging from hundreds of nanometers to several micrometers and lengths ranging from several micrometers to tens of micrometers.
