Single-Crystal Calcium Hexaboride Nanowires: Synthesis and Characterization
Nano Letters2004Vol. 4(10), pp. 2051–2055
Citations Over TimeTop 12% of 2004 papers
Abstract
Catalyst-assisted growth of single-crystal calcium hexaborlde (CaB6) nanowires was achieved by pyrolysis of diborane (B2H6) over calcium oxide (CaO) powders at 860-900 degreesC and similar to155 mTorr in a quartz tube furnace. TEM electron diffraction and Raman spectroscopy indicate that the nanowires are single-crystal CaB6 and have a preferred [001] growth direction. Analysis of TEM/EDX/EELS data proves the nanowires consist of CaB6 cores and thin (1-2 nm) amorphous oxide shell material. The CaB6 nanowires have diameters of similar to15-40 nm, and lengths of similar to1-10 mum.
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