Synthesis and characterization of (Mg, Al)-doped apatite-type lanthanum germanate

摘要：

In this study, (Mg, Al)-doped apatite-type lanthanum germanates were studied as a potential electrolyte for ITSOFC. La10-xMgxGe5.5Al0.5O26.75-x/2 (x= 1.0,0.6,0.4,0.2) were synthesized by solid state reaction. The phases of samples were determined by X-ray powder diffraction data using the Rietveld refinement and the lattice volumes increase with Mg doping amount. The conductivities obviously increase with Mg content below 600℃ measured by impedance spectroscopy. The mechanism of oxygen ion migration is discussed.

关键词： Apatite-type Lanthanum germinates (Mg, Al)-doped Conductivity

作者: Hua Zhang Feng Li Jiang Jin Qin Wang Yun Sun

作者单位: College of Materials Science and Engineering, Nanjing University of Technology, No.5 Xinmofan Road, Nanjing 210009, PR China

会议类型: 国际会议

会议名称: The 16th International Conference on Solid State Ionics(第十六届国际固态离子学会议)

会议地点: 上海

会议语种:英文

页码: 1024-1028

在线出版日期: 2007-07-01（万方平台首次上网日期，不代表论文的发表时间）