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Synthesis and Characterization of Nanocrystals of the Oxide Metals, RuO2, IrO2, and ReO3

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Abstract:

Nanoparticles of transition metal oxides with metallic properties, RuO2, IrO2, and ReO3 in the ranges 6.5–19nm, 6–14 nm, and 8.5–32.5 nm, respectively have been prepared by soft chemical routes. The nanoparticles have been characterized by X-ray diffraction, electron microscopy, optical spectroscopy, and scanning probe microscopy. All the nanoparticles show conducting behaviour, as confirmed by tunneling conductance measurements. Magnetic properties of the nanoparticles depend on temperature as well as the particle size. In the case of ReO3, a plasmon band is observed around 520 nm, just as in copper. The band gets blue-shifted with decrease in size.

Keywords: IRO2; METALLIC TRANSITION METAL OXIDES; REO3; RUO2; SCANNING TUNNELING MICROSCOPY; TRANSMISSION ELECTRON MICROSCOPY

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/jnn.2007.750

Publication date: June 1, 2007

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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