Epitaxy of Pt thin films on (001) MgO-II : Orientation evolution from nucleation through coalescence
Epitaxy of Pt thin films on (001) MgO-II : Orientation evolution from nucleation through coalescence
复制标题
DOI：
10.1016/s1359-6454(96)00183-8
复制
发表时间：
1997-02
期刊：
影响因子：
9.4
通讯作者：
P. McIntyre;C. Maggiore;M. Nastasi
中科院分区：
文献类型：
--
作者：
P. McIntyre;C. Maggiore;M. Nastasi
实验研究了在(001)MgO衬底上沉积的铂薄膜的取向选择和微结构演变。在薄膜和衬底之间没有强烈的化学相互作用的情况下，铂镁系统是外延的一个例子。铂薄膜以Volmer-Weber外延模式生长，并且根据沉积条件的不同，在(001)MgO上可能有多个外延薄膜取向。从薄膜/衬底界面能和薄膜表面能最小化两个方面解释了薄膜生长过程中择优取向的实验观测。结果表明，岛状薄膜在结合过程中和结合后的最终组织是由晶界运动控制的。
Orientation selection and microstructural evolution of thin platinum films deposited on to (001) MgO substrates are examined experimentally. The Pt MgO system is an example of epitaxy in the absence of strong chemical interactions between film and substrate. Platinum films grow in the Volmer-Weber mode of epitaxy, and more than one epitaxial film orientation is possible on (001) MgO depending upon the deposition conditions. Experimental observations of orientation selection during film growth are explained based on film/substrate interface energy and film surface energy minimization. The results indicate that the final microstructure is controlled by grain boundary motion during and after coalescence of the island films.