Investigation of the structure of single crystal Sr3Ru2O7 by neutron and convergent beam electron diffractions
Investigation of the structure of single crystal Sr3Ru2O7 by neutron and convergent beam electron diffractions
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DOI：
10.1143/jpsj.73.639
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发表时间：
2004-03-01
影响因子：
1.7
通讯作者：
Uwatoko, Y
中科院分区：
文献类型：
--
作者：
Kiyanagi, R;Tsuda, K;Uwatoko, Y
用单晶的中子衍射和会聚束电子衍射(CBED)实验重新研究了Sr3Ru2O7的结构。CBED实验表明，Sr3Ru2O7的空间群为BBCB，晶格为正交晶格，晶体中含有纳米级的孪晶成分。考虑到这些观测，对中子数据进行了结构分析。研究发现，相互连接的RuO6-八面体绕c轴方向相反旋转。这一结果与前人用粉末中子衍射实验得到的结果一致。
The structure of Sr3Ru2O7 was reinvestigated by a neutron diffraction and a convergent-beam electron diffraction (CBED) experiment on single crystals. The CBED experiment revealed that the space group of Sr3Ru2O7 is Bbcb with an orthorhombic lattice with nanometer-size twin components in the crystal. Taking these observations into account, a structure analysis was carried Out with the neutron data. It was found that RuO6-octahedrons connected each other have rotated about c-axis in the opposite direction. This result is consistent with the previous report by a powder neutron diffraction experiment.