Orientation Relationships of SrTiO3 and MgTiO3 Thin Films Grown by Vapor−Solid Reactions on (100) and (110) TiO2 (Rutile) Single Crystals
Orientation Relationships of SrTiO3 and MgTiO3 Thin Films Grown by Vapor−Solid Reactions on (100) and (110) TiO2 (Rutile) Single Crystals
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(100) 和 (110) TiO2（金红石）单晶上气固反应生长的 SrTiO3 和 MgTiO3 薄膜的取向关系
DOI：
10.1021/jp0672297
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发表时间：
2007
影响因子：
3.7
通讯作者：
D. Hesse
中科院分区：
文献类型：
--
作者：
A. Lotnyk;S. Senz;D. Hesse
采用气相−固相反应在不同表面取向的二氧化钛(金红石型)单晶上生长了钛酸锶和钛镁薄膜。用X射线衍射仪(X射线衍射仪)和透射电子显微镜研究了产物相与二氧化钛基片之间的结晶学关系。X射线衍射极图分析表明，随着沉积温度的不同，钛酸锶的取向关系不止一种。所有观察到的取向都有一个共同的[110]SrTiO3TiO2TiO2[001]∥倾斜轴。此外，还发现在金红石晶体上形成了一种拓扑结构的二氧化镁。讨论了反应产物与二氧化钛底物之间的结晶学关系及其来源，以及结晶学在第一相选择中的作用。
SrTiO3 and MgTiO3 thin films were grown by vapor−solid reactions on TiO2 (rutile) single crystals with different surface orientations. The crystallographic relations between the product phases and the TiO2 substrates were studied by X-ray diffractometry (XRD) and transmission electron microscopy. XRD pole figure analysis revealed more than one orientation relationship for SrTiO3 depending on deposition temperature. All observed orientations have a common [110] SrTiO3 ∥ [001] TiO2 tilt axis. Alternatively, a topotaxial formation of MgTiO3 on the rutile crystals was found. The crystallographic relationships between the reaction products and the TiO2 substrates and their origins as well as the role of crystallography for first phase selection are discussed.