Mobility and aggregation of free clusters soft landed on amorphous and crystalline carbon substrates

被引：10

作者：

Brechignac, C ^{[1
]}

Cahuzac, P ^{[1
]}

Carlier, F ^{[1
]}

deFrutos, M ^{[1
]}

Masson, A ^{[1
]}

Colliex, C ^{[1
]}

Mory, C ^{[1
]}

Yoon, B ^{[1
]}

机构：

[1] LAB PHYS SOLIDES,F-91405 ORSAY,FRANCE

来源：

ZEITSCHRIFT FUR PHYSIK D-ATOMS MOLECULES AND CLUSTERS | 1997年 / 40卷 / 1-4期

关键词：

D O I：

10.1007/s004600050266

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

Neutral antimony clusters produced by a gas aggregation source have been deposited at room temperature on thin films of amorphous carbon and cleavage surfaces (0001) of graphite. Antimony islands generated from different mean size distributions of preformed clusters Sb-n(n = 4, 90, 150, 250, 600; 2000) have been investigated by transmission electron microscopy. Only compact islands have been observed on amorphous carbon, whereas an evolution from compact to dendritic shapes occurs on graphite substrate as the mean size of the deposited clusters increases. For clusters containing more than 150 atoms the dendritic islands exhibit a fractal character whose dimensional analysis yields a fractal dimension of 1.63 +/- 0.07. The different models for island growth are discussed in the light of these results.

引用

页码：516 / 519

页数：4

共 16 条

[1] DYNAMICS OF IRREVERSIBLE ISLAND GROWTH DURING SUBMONOLAYER EPITAXY [J].