Effect of nucleation on the crystalline structure of nanowhiskers

被引：9

作者：

Dubrovskii, V. G. ^{[1
]}

Sibirev, N. V. ^{[2
]}

机构：

[1] Russian Acad Sci, AF Ioffe Phys Tech Inst, St Petersburg 194021, Russia

[2] Russian Acad Sci, St Petersburg Ctr Res & Educ Phys & Technol, St Petersburg 194021, Russia

来源：

TECHNICAL PHYSICS LETTERS | 2009年 / 35卷 / 04期

基金：

俄罗斯基础研究基金会;

关键词：

GROWTH-RATE; WHISKERS;

D O I：

10.1134/S1063785009040282

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

An exactly solvable model of nucleation during the growth of nanowhiskers has been constructed. Activation barriers for the formation of nuclei in various positions are determined as dependent on the chemical potentials and surface energies. It is shown that the nucleation at the triple contact line is energetically favorable. In a broad range of system parameters, the formation of a hexagonal vurtzite-like crystalline phase takes place (particularly for GaAs nanowhiskers growing on an GaAs(111)B substrate surface activated by gold drops). Dependences of the probability of the hexagonal phase formation on the degree of supersaturation in the liquid catalyst and the NW radius are determined.

引用

页码：380 / 383

页数：4

共 16 条

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