摘要
采用X射线粉末衍射Rietveld精修方法和高分辨电子显微方法分析了六钛酸钾纳米线的晶体结构。X射线精修结果表明纳米线的晶体结构与六钛酸钾晶须结构相同。高分辨电子显微像模拟计算所得的像与高分辨像匹配良好,且与X射线结构精修所得结构模型相符。纳米线的生长方向平行于K2Ti6O13结构的[010]方向。
The structure of K2Ti6O13 nanowires has been investigated using both the Rierveld powder diffraction profile fitting technique. and high resolution transmission electron microscopy (HRTEM) image simulations. the Rierveld analysis show that the nanowires had a monoclinic structure of the space group C2/M. The good agreement between the experimental and simulated images confirms that the nanowires is indeed K2Ti6O13 nanowire. HRTEM conclusions agree with refinement results obtained from experimental XRD data The nanowires grow out mainly along the [010] direction.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2005年第1期56-59,共4页
Rare Metal Materials and Engineering
基金
国家杰出青年科学基金(50025103)
国家自然科学基金重大项目(90306014)
国家自然科学基金资助的课题(20271037)
关键词
六钛酸钾
X射线
高分辨电子显微术
晶体结构
potassium hexatitanate
X-ray diffraction
HRTEM technique
crystal structure
