Work

Size effects in the structural phase transition of VO2 nanoparticles

Year: 2002

Type: article

Abstract: We have observed size effects in the structural phase transition of submicron vanadium dioxide precipitates in silica. The ${\mathrm{VO}}_{2}$ nanoprecipitates are produced by the stoichiometric coimplantation of vanadium and oxygen and subsequent thermal processing. The observed size dependence in the transition temperature and hysteresis loops of the semiconductor-to-metal phase transition in ${\mathrm{VO}}_{2}$ is described in terms of heterogeneous nucleation statistics with a phenomenological approach in which the density of nucleating defects is a power function of the driving force.

Source: Physical review. B, Condensed matter

DOI: 10.1103/physrevb.65.224113

Authors: R. Lopez, T. E. Haynes, L. A. Boatner, L. C. Feldman, R. F. Haglund

Institutions: Oak Ridge National Laboratory, Vanderbilt University

Language: English

Topic: Transition Metal Oxide Nanomaterials

Subfield: Electronic, Optical and Magnetic Materials

Field: Materials Science

Domain: Physical Sciences

Open Access status: green

Funders: U.S. Department of Energy, Vanderbilt University, Office of Science, Oak Ridge National Laboratory