A hydrothermally deposited epitaxial lead titanate thin film on strontium ruthenium oxide bottom electrode
A hydrothermally deposited epitaxial lead titanate thin film on strontium ruthenium oxide bottom electrode
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DOI：
10.1063/1.1794867
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发表时间：
2004-09
影响因子：
4
通讯作者：
T. Morita;Yasuo Cho
中科院分区：
文献类型：
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作者：
T. Morita;Yasuo Cho
采用水热法在氧化锶钌底电极上制备了钛酸铅外延薄膜。反应温度为150℃，比常规沉积工艺温度低400℃以上。x射线衍射测量显示了一个c轴取向。单晶样DE滞后曲线显示剩余极化为96.5μC∕cm2。利用金属包覆原子力显微悬臂探针控制畴的方向，用扫描非线性介电显微镜观察畴的形貌。这一调查证实了该薄膜不含a-域。此外，即使在纳米尺度上，也没有观察到畴或晶界等缺陷。
A lead titanate epitaxial thin film was obtained on a strontium ruthenium oxide bottom electrode by the hydrothermal method. The reaction temperature was 150°C more than 400 degrees lower than that of the conventional deposition processes. X-ray diffraction measurements revealed a c-axis of orientation. The single-crystal-like DE hysteresis curve showed a remanent polarization of 96.5μC∕cm2. The domain direction was controlled by an applied electric field using a metal-coated atomic force microcopy cantilever probe and the domain pattern was observed by scanning nonlinear dielectric microscopy. This investigation verified that this film did not contain an a-domain. In addition, no defects such as domain or grain boundaries were observed, even on the nanoscale.