Diagnostics of laser-produced plume under carbon nanotube growth conditions | Zendy

Sivaram Arepalli | Zendy; Pavel Nikolaev | Zendy; William Holmes | Zendy; Clayton Scott | Zendy

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Diagnostics of laser-produced plume under carbon nanotube growth conditions

Author(s) -

Sivaram Arepalli,

Pavel Nikolaev,

William Holmes,

Clayton Scott

Publication year - 2000

Publication title -

applied physics a

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.485

H-Index - 149

eISSN - 1432-0630

pISSN - 0947-8396

DOI - 10.1007/s003390050024

Subject(s) - plume , laser , spectral line , excited state , analytical chemistry (journal) , carbon nanotube , rotational temperature , chemistry , materials science , atomic physics , optics , nanotechnology , physics , meteorology , chromatography , astronomy

The amorphous non-equilibrium state of the system Fe/Al is studied in bulk and thin-film systems. For bulk samples prepared by ion-beam mixing of laser-deposited multilayers, a bcc solid solution is found for alloys with up to 70 at. % Al. Around 75 at. % Al a Fe2Al5-like crystalline phase is found. An amorphous state with Fe2Al5-like short-range order is found for 80 at. % Al. In thin films, for example the amorphous Al-rich transition layer of a laser-deposited Fe/Al multilayer, the amorphous state can exist for up to 30 at. % Fe due to the high interfacial energy. By ion-beam mixing at low temperatures (about 140 K) an oversaturation with 40 at. % Fe can be achieved.

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