Self-aligned Co nanoparticle chains supported by single-crystalline Al2O3/NiAl(100) template

Lin, Wen-Chin; Kuo, Chien-Cheng; Luo, Meng-Fan; Song, Ker-Jar; Lin, Minn-Tsong
January 2005
Applied Physics Letters;1/24/2005, Vol. 86 Issue 4, p043105
Academic Journal
We present Co nanoparticle chains grown by vapor deposition over a single-crystalline Al2O3 layers on NiAl(100) with such features as self-limiting size distribution with the average size of ∼2.7 nm, well-ordered alignment, and high thermal stability. We attribute these features to peculiar one-dimensional long stripes with ∼4 nm interdistance on the surface of the ultrathin Al2O3 template. This nanostructure may open the door to numerous applications, such as catalysis and nanostorage, where large area well-ordered nanodots are desired.


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