Effect of hydrogen pretreatment on the spin-capability of a multiwalled carbon nanotube forest

被引：14

作者：

Jung, Daewoong ^{[1
]}

Han, Maeum ^{[1
]}

Overzet, Lawrence J. ^{[1
]}

Lee, Gil S. ^{[1
]}

机构：

[1] Univ Texas Dallas, Dept Elect Engn, Richardson, TX 75080 USA

来源：

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B | 2013年 / 31卷 / 06期

关键词：

CHEMICAL-VAPOR-DEPOSITION; SIZE-CONTROLLED SYNTHESIS; CONTROLLED GROWTH; FE CATALYSTS; NANOPARTICLES; MORPHOLOGY; YARNS; FILM; TRANSPARENT; SHEET;

D O I：

10.1116/1.4825116

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The authors report the effect of hydrogen (H-2) pretreatment on the spin capability of vertically aligned multiwalled carbon nanotubes (MWCNTs) grown on an iron (Fe) catalyst by using a chemical vapor deposition system. Variations in H-2 pretreatment time had significant effects on the distribution, morphology, diameter, and height of MWCNTs. A longer H-2 pretreatment time to the Fe film increased the number of large Fe particles as well as crystallization of Fe3O4 phase. As a result, the areal density of carbon nanotubes (CNTs) was largely reduced, whereas the mean CNT diameter slightly increased. This worsened the alignment of the CNTs and reduced the spin-capability of MWCNTs. (C) 2013 American Vacuum Society.

引用

页数：8

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