Study of morphological behavior of single diamond crystals
Study of morphological behavior of single diamond crystals
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DOI：
10.1016/s0022-0248(99)00658-2
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发表时间：
2000-02-01
影响因子：
1.8
通讯作者：
Prior, Y
中科院分区：
文献类型：
--
作者：
Bühler, J;Prior, Y
采用热丝化学气相沉积（CVD）技术在si衬底上生长金刚石晶体。我们研究了在不同生长条件下分离金刚石晶体的发育。从分离的金刚石晶体中测定生长参数alpha =根3v(100)/v(111)，并对同一晶体进行多次再生和扫描电镜重复检测。随着生长条件的变化，形貌的变化可以被跟踪。多重孪晶粒子的形貌随生长参数α的变化而变化。实验测量了自纯形状对生长参数α的依赖性，并与模型计算进行了比较。结果表明，多晶孪晶颗粒的基本形貌决定于成核阶段的早期。(C) 2000由Elsevier Science B.V.出版，版权所有。
Isolated diamond crystals are grown by hot filament chemical vapor deposition (CVD) on Si-substrates without nucleation enhancement. We investigate the development of isolated diamond crystals under changing growth conditions. The growth parameter alpha = root 3v(100)/v(111) is determined from isolated diamond crystals and the same crystal is regrown several times and detected repeatedly by a scanning electron microscope. The change in morphology can be followed as the growth conditions are changing. Multiply twinned particles are also investigated and observed to change their morphology with the growth parameter alpha. The dependence of the idiomorphic shape on the growth parameter alpha is measured experimentally and compared with model calculations. It is shown that the basic determination of the morphology of a multiply twinned particle occurs at the early part of the nucleation phase. (C) 2000 Published by Elsevier Science B.V. All rights reserved.