Structure and Physical Properties of Metastable Hexagonal LuFeO3
Structure and Physical Properties of Metastable Hexagonal LuFeO3
复制标题
亚稳态六方LuFeO3的结构和物理性质
DOI：
--
复制
发表时间：
2009
期刊：
影响因子：
--
通讯作者：
Jianding Yu
中科院分区：
文献类型：
--
作者：
A. Masuno;S. Sakai;Y. Arai;H. Tomioka;Fumiaki Otsubo;H. Inoue;C. Moriyoshi;Y. Kuroiwa;Jianding Yu
采用无容器法合成了亚稳的LuxFeO3（0.65 < x < 1.35）多晶.同步辐射粉末衍射分析和扫描电子显微镜观察表明，它们是在三个亚稳相。这些阶段之一的晶体结构被分配到一个极性空间群P6 3 cm的组成LuFeO 3，它具有类似的结构，作为六方晶系的YMnO 3。在室温以上观察到六方LuFeO3的特征介电弛豫和强频散。
Metastable Lu x FeO 3 polycrystals (0.65 < x < 1.35) have been synthesized by containerless processing. Synchrotron-radiation powder diffraction analysis and scanning electron microscope observation have shown them to be in three metastable phases. The crystal structure of one of these phases was assigned to a polar space group P6 3 cm with the composition of LuFeO 3 , which has a similar structure as that of hexagonal YMnO 3 . A characteristic dielectric relaxation with strong frequency dispersion of the hexagonal LuFeO 3 was observed above room temperature.