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首页> 外文期刊>Journal of Crystal Growth >Self-organized growth of complex oxide Ce:BaTiO_3 nano-isolands on (1 0 0) MgO by pulsed laser ablation
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Self-organized growth of complex oxide Ce:BaTiO_3 nano-isolands on (1 0 0) MgO by pulsed laser ablation

机译：脉冲激光烧蚀在（1 0 0）MgO上自发形成复合氧化物Ce：BaTiO_3纳米同位素的自组织生长

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摘要

Pulsed laser ablation epitaxial Stransky8-Krastanow growth of self-organized complex oxide Ce::BaTiO_3 islands on MgO (1 0 0) substrates is demonstrated. The lattice mismatch of Ce:BaTiO_3/MgO heterostructure leads to a straindriven distribution of nanoscale Ce:BaTiO_3 islands on the top of a two-dimensionally grown wetting laeyr. Atomic force microscoy. X-ray diffraction and X-ray energy dispersive spectrometer are used to determine the structure of the wetting layer and morphological dimensions and the composition of the islands. The square base pyramidal complex oxide islands re observed. The density of the islands, their average dimension, height, and aspect ratio turn out to be about 140 μm~-2, 87.9 NM, 9.6 NM, and 0.15, respectively, for our experimental condition. Furthermore, the difference of he critical thickness between the complex oxide and semiconductor with similar lattice mismatch and their mechanism are discussed.
机译：证明了在MgO（1 0 0）衬底上自组织复合氧化物Ce :: BaTiO_3岛的脉冲激光烧蚀外延Stransky8-Krastanow生长。 Ce：BaTiO_3 / MgO异质结构的晶格失配导致应变驱动的二维生长的润湿层顶部的纳米Ce：BaTiO_3岛的分布。原子力微粘。 X射线衍射和X射线能量色散光谱仪用于确定润湿层的结构，形态尺寸和岛的组成。观察到方基金字塔形复合氧化物岛。在我们的实验条件下，岛的密度，其平均尺寸，高度和长宽比分别约为140μm〜-2、87.9 NM，9.6 NM和0.15。此外，讨论了具有相似晶格失配的复合氧化物和半导体的临界厚度差异及其机理。

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