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Synthesis and characterization of nanocrystals of the oxide metals, $RuO_2$, $IrO_2$, and $ReO_3$

Biswas, Kanishka and Rao, CNR (2007) Synthesis and characterization of nanocrystals of the oxide metals, $RuO_2$, $IrO_2$, and $ReO_3$. In: Journal of Nanoscience and Nanotechnology, 7 (6). pp. 1969-1974.

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Official URL: http://www.aspbs.com/jnn/

Abstract

Nanoparticles of transition metal oxides with metallic properties, $RuO_2$, $IrO_2$, and $ReO_3$ in the ranges 6.5-19 nm, 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 $ReO_3$ a plasmon band is observed around 520 nm, just as in copper. The band gets blue-shifted with decrease in size.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to American Scientific Publishers.
Keywords: Metallic Transition Metal Oxides;RUO2;IRO2;REO3;Transmission Electron Microscopy;Scanning Tunneling Microscopy
Department/Centre: Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited: 06 Aug 2007
Last Modified: 02 Feb 2012 09:33
URI: http://eprints.iisc.ernet.in/id/eprint/11653

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