Crystalline structures and misfit strain inside Er silicide nanocrystals self-assembled on Si(001) substrates

Ding, Tao, Wu, Yueqin, Song, Junqiang, Li, Juan, Huang, Han, Zou, Jin and Cai, Qun (2011) Crystalline structures and misfit strain inside Er silicide nanocrystals self-assembled on Si(001) substrates. Nanotechnology, 22 24: Article number 245707. doi:10.1088/0957-4484/22/24/245707


Author Ding, Tao
Wu, Yueqin
Song, Junqiang
Li, Juan
Huang, Han
Zou, Jin
Cai, Qun
Title Crystalline structures and misfit strain inside Er silicide nanocrystals self-assembled on Si(001) substrates
Journal name Nanotechnology   Check publisher's open access policy
ISSN 0957-4484
Publication date 2011-06-17
Sub-type Article (original research)
DOI 10.1088/0957-4484/22/24/245707
Volume 22
Issue 24
Start page Article number 245707
Total pages 6
Place of publication United Kingdom
Publisher Institute of Physics Publishing
Collection year 2012
Language eng
Formatted abstract
The morphology and crystalline structure of Er silicide nanocrystals self-assembled on the Si(001) substrate were investigated using scanning tunneling microscopy (STM) and transmission electron microscopy (TEM). It was found that the nanowires and nanorods formed at 630 °C has dominant hexagonal AlB2-type structure, while inside the nanoislands self-organized at 800 °C the tetragonal ThSi2-type structure is prevalent. The lattice analysis via cross-sectional high-resolution TEM demonstrated that internal misfit strain plays an important role in controlling the growth of nanocrystals. With the relaxation of strain, the nanoislands could evolve from a pyramid-like shape into a truncated-hut-like shape.
Keyword Erbium Disilicide Nanowires
Growth
Evolution
Surfaces
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

 
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