Transition from three- to two-dimensional growth in strained SrRuO3 films on SrTiO3(001)
Transition from three- to two-dimensional growth in strained SrRuO3 films on SrTiO3(001)
复制标题
DOI：
10.1063/1.1599040
复制
发表时间：
2003-07
影响因子：
4
通讯作者：
F. Sánchez;M. V. García-Cuenca;C. Ferrater;M. Varela;G. Herranz;B. Martínez;J. Fontcuberta
中科院分区：
文献类型：
--
作者：
F. Sánchez;M. V. García-Cuenca;C. Ferrater;M. Varela;G. Herranz;B. Martínez;J. Fontcuberta
研究了在SrTiO_3（001）衬底上生长的应变SrRu_3薄膜的形貌与厚度的关系。增长模式的转变已经被观察到。在早期阶段，有一个手指状的结构起源于三维（3D）的岛屿，成核沿着衬底的步骤。之后，吸附原子优先粘附在结构的谷中，并且膜变得逐渐平滑。在厚度大于10-20 nm时，薄膜非常平坦，并具有自组织的台阶和台阶结构，生长主要通过台阶流动（二维）机制进行。薄膜性能和可能使用的初始，纳米，3D结构的相关性进行了讨论。
The morphology of strained SrRuO3 films grown on SrTiO3(001) has been investigated as a function of thickness. A transition of growth mode has been observed. At the early stages, there is a fingerlike structure originated by three-dimensional (3D) islands that nucleated along the substrate steps. Afterward, adatoms stick preferentially in the valleys of the structure and the films become progressively smoother. At a thickness above 10–20 nm, the films are extremely flat and have a self-organized structure of terraces and steps, with the growth proceeding mainly by a step flow (two-dimensional) mechanism. Relevance on film properties and possible use of the initial, nanometric, 3D structures are discussed.