Growth of nanorods and mesoscale stars prior to an orientation transition in thin Bi films on graphite

被引:6
作者
Scott, S. A.
Kral, M. V.
Brown, S. A. [1 ]
机构
[1] Univ Canterbury, MacDiarmid Inst Adv Mat & Nanotechnol, Dept Phys & Astron, Christchurch 1, New Zealand
[2] Univ Canterbury, Dept Mech Engn, Christchurch 1, New Zealand
关键词
bismuth; graphite; morphology; self-assembly;
D O I
10.1016/j.apsusc.2005.12.015
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
We report on the growth of unusual star shaped Bi islands and ordered arrays of nanorods on highly ordered pyrolitic graphite (HOPG) substrates. The rods and stars grow with {0 1 2}(Bi)vertical bar vertical bar{0 0 1}(HOPG) and are preferentially aligned with the high symmetry directions of the substrate. As more Bi is deposited, the film undergoes a transition to the {0 0 1} orientation. These features are a result of a complex interplay between kinetics, thermodynamics, and the crystallography of the substrate and island material. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码:5563 / 5567
页数:5
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