Structure analysis of a new oxide Yb2TiMnO6
Structure analysis of a new oxide Yb2TiMnO6
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新型氧化物Yb2TiMnO6的结构分析
DOI：
10.1016/s0025-5408(00)00471-2
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发表时间：
2001
影响因子：
5.4
通讯作者：
K. Urabe
中科院分区：
文献类型：
--
作者：
H. Nakano;N. Kamegashira;K. Urabe
以Yb 2 O3、TiO 2和MnO为原料，在1523 K、含1%H2的Ar气氛中合成了一种新的三元氧化物。使用粉末X射线衍射仪（XRD）、电子探针显微分析仪（EPMA）和透射电子显微镜（TEM）对化合物进行表征。Yb1.8Ti1.3Mn0.7O6.0为六方晶系，晶胞参数a = 0.6137（1）nm，c = 1.1794（2）nm。非化学计量的氧化物是不稳定的电子辐照后。电子束照射3-20分钟改变了氧化物的结构。选区电子衍射（SAD）显示了超晶格反射消失或出现新的额外反射的变化。改变后的材料具有由两种类型的结构组成的畴结构，一种结构具有a/3维的基本单元，另一种结构具有2a/103维的新结构。
A new ternary oxide was synthesized from Yb2O3,TiO2and MnO in an Ar atmosphere containing 1% H2at 1523K. The compound was characterized using a powder X-ray diffractometer (XRD), an electron probe microanalyzer (EPMA), and a transmission electron microscope (TEM). The oxide with the composition, Yb1.8Ti1.3Mn0.7O6.0,had a hexagonal cell with lattice parameters a = 0.6137(1) nm and c = 1.1794(2) nm. The nonstoichiometric oxide was unstable following electron irradiation. The electron beam irradiation for 3–20 minutes changed the structure of the oxide. The selected area electron diffraction (SAD) patterns showed the changes, in which superlattice reflections vanished or new extra reflections appeared. The changed material had a domain structure composed of two types of structures, one structure had a basic cell with the a/3 dimension and the other one had a new structure with the 2a/√3 dimension.