Nano Archive

Ultralong single-crystal metallic Ni2Si nanowires with low resistivity

Song, Yipu and Schmitt, Andrew L. and Jin, Song (2007) Ultralong single-crystal metallic Ni2Si nanowires with low resistivity. NANO LETTERS, 7 (4). pp. 965-969.

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Ultralong, single-crystal Ni2Si nanowires sheathed with amorphous silicon oxide were synthesized on a large scale by a chemical vapor transport (CVT) method, using iodine as the transport reagent and Ni2Si powder as the source material. Structural characterization using powder X-ray diffraction, electron microscopy, and energy-dispersive spectroscopy shows that the nanowires have Ni2Si-SiOx core-shell structure with single-crystal Ni2Si core and amorphous silicon oxide shell. The oxide shell is electrically insulating and can be removed by HF etching. Four-terminal electrical measurements show that the single-crystal nanowire has extremely low resistivity of 21 mu Omega center dot cm and is capable of supporting remarkably high failure current density > 10(8) A/cm(2). These unique Ni2Si nanowires are very attractive nanoscale building blocks for interconnects and fully silicided (FUSI) gate applications in nanoelectronics.

Item Type:Article
Subjects:Material Science > Nanofabrication processes and tools
Physical Science > Nano objects
Physical Science > Nanoelectronics
Material Science > Nanochemistry
Material Science > Nanostructured materials
ID Code:2229
Deposited By:Anuj Seth
Deposited On:06 Jan 2009 15:40
Last Modified:20 Jan 2009 10:54

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