Niobium nanoclusters studied with in situ transmission electron microscopy

Vystavel, T.; Palasantzas, G.; Koch, S.A.; De Hosson, J.Th.M.
November 2003
Applied Physics Letters;11/10/2003, Vol. 83 Issue 19, p3909
Academic Journal
Structural aspects of deposited niobium nanoclusters approximately 10 nm in size have been explored by means of high-resolution transmission electron microscopy. The niobium clusters have a bcc structure and a crystal habit of rhombic dodecahedron. In situ heating up to ∼800 °C revealed a resistance to high temperatures, in the sense that the cluster habit is preserved. However, the internal structural order of the clusters is altered due to formation of niobium oxide domains within the clusters. Coalescence does not occur even at the highest temperatures, which is attributed to the presence of facets and the occurrence of oxidation during heat treatment. © 2003 American Institute of Physics.


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