节点文献
La掺杂SrBi4Ti4O15结构影响研究
Study on the structure of La-doped SrBi4Ti4O15
【摘要】 通过对La不同掺杂比例SBT的XRD、拉曼光谱测试表明La掺杂对铋层状结构材料SBT的结构没有破坏。随掺杂量增加La取代不同位置,SBT拉曼光谱中270cm-1峰和550cm-1峰先宽化然后逐渐锐化,314cm-1肩峰锐化,870cm-1峰没有太大的变化。La掺杂进入类钙钛矿层对邻近TiO6八面体振动影响更大。
【Abstract】 In this paper the structure of La-doped SBT with different doping amount was tested by XRD and raman scattering.La-doping has not destroyed the structure of SBT.With the increase of doping amount,La ion substitutes into different site and the 314 and 550cm-1 modes related to the rotating and tilting of TiO6 octahedron firstly become wide and then become sharp.La substituting into the Bi site in perovskite-like has more influence on the vibrating of TiO6 octahedron.
【基金】 国家高技术研究发展计划(863计划)资助项目(2003AA325020);国家自然科学基金资助项目(50472016,50502027)
- 【文献出处】 功能材料 ,Journal of Functional Materials , 编辑部邮箱 ,2007年02期
- 【分类号】O614.331
- 【被引频次】3
- 【下载频次】186