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Carbon nanowires made on diamond surface by focused ion beam
Author(s) -
Zaitsev Alexander M.
Publication year - 2005
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.200521090
Subject(s) - nanowire , diamond , graphite , materials science , conductivity , ion , irradiation , focused ion beam , electrical conductor , nanorod , carbon fibers , nanotechnology , conductance , surface conductivity , composite material , chemistry , condensed matter physics , composite number , physics , organic chemistry , nuclear physics
Conductive carbon nanowires were made on the polished surface of a single crystal CVD diamond by 30 keV Ga + ion beam focused to 20 nm. Measurements of conductance of the as‐irradiated nanowires and those annealed at temperature 1400 °C revealed the onset of the ion‐induced conductance to be of 2 × 10 15 cm –2 . Short nanowires (sub‐micron length) irradiated with subthreshold doses from 5 × 10 14 cm –2 to 3 × 10 15 cm –2 exhibited unusually high conductivity of 10 5 Ω –1 cm –1 well exceeding the conductivity of bulk graphite and comparable with that of metals. Tentative explanation of the effect is formation of chains of highly conductive carbon nanorods along 〈100〉 direction in diamond lattice. (© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)