Self-Organized V - Mo Oxide Fibers by the Micro-Pulling Down Method

Details Self-Organized V - Mo Oxide Fibers by the Micro-Pulling Down Method Self-Organized V - Mo Oxide Fibers by the Micro-Pulling Down Method

2009-11-17

arxiv.org/abs/0911.3207v2

Physics

Condensed Matter

Materials Science

8 pages, 6 figures, MRS Fall 2009 Boston

Scientific paper

The V2O5-MoO3 mixtures offer a whole range of materials where properties can be adjusted by simple modification of experimental parameters, which may be utilized in manufacturing of metamaterials with on-demand properties. The V2O5-MoO3 system contains an intermediate phase V9Mo6O40, with a small fraction of V4+ instead of V5+. Consequently, this system should rather be considered as pseudobinary. The V4+ content depends on the oxygen partial pressure in the atmosphere. Thus, by changing the oxygen partial pressure one can tailor the electric properties of the system, and by changing the supercooling, the morphologic structure of crystallized bodies as well. For better understanding of this system differential thermal analysis and thermodynamic modeling was performed. Fibers of eutectic composition between V9Mo6O40 and MoO3 were grown by the micro-pulling-down technique. X-ray diffraction confirmed the existence of the V9Mo6O40 intermediate phase.

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