Growth Morphology and Crystal Orientation of KNbO3 Film on SrTiO3 by Liquid Phase Epitaxy
Growth Morphology and Crystal Orientation of KNbO3 Film on SrTiO3 by Liquid Phase Epitaxy
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SrTiO3 上液相外延 KNbO3 薄膜的生长形貌和晶体取向
DOI：
10.1143/jjap.41.6908
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发表时间：
2002
影响因子：
1.5
通讯作者：
H. Ohsato
中科院分区：
文献类型：
--
作者：
K. Kakimoto;S. Ito;Izumi Masuda;H. Ohsato
采用高温K2 CO 3-Nb 2 O 5溶液，采用液相外延（LPE）技术在SrTiO 3（001）衬底上成功地生长了KNbO 3（001）单晶薄膜。熔体组成和薄膜生长温度对薄膜的生长形态有很大影响。在用于体晶生长的K2 CO 3含量为52.5mol%的熔体中生长的KNbO 3薄膜中观察到半透明和缺陷形成。相反，通过使用具有65.0摩尔%的高K2 CO 3含量的熔体将生长温度从1051 ° C降低到900°C，获得透明的单相外延膜。通过旋进X射线照相研究了KNbO 3薄膜与SrTiO 3衬底之间的晶体学关系。
Single-crystalline KNbO3 (001) films were successfully formed on the SrTiO3 (001) substrate from high temperature K2CO3–Nb2O5 solution by liquid phase epitaxy (LPE) technique. The growth morphology was strongly influenced by the melt composition and film growth temperature. Translucency and defect formation were observed in the KNbO3 films grown from the melt with K2CO3 content of 52.5 mol% which is utilized for the bulk crystal growth. In contrast, a transparent single-phase epitaxial film was obtained by lowering the growth temperature from 1051 to 900°C using the melt with high K2CO3 content of 65.0 mol%. The crystallographic relationship between KNbO3 film and SrTiO3 substrate was also investigated by the precession X-ray photography.