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

Published online by Cambridge University Press:  15 March 2011

Detlef Klimm
Leibniz Institute for Crystal Growth, Max-Born-Str. 2, 12489 Berlin, Germany
Krzysztof Orlinski
Institute of Electronic Materials Technology, 133 Wólczyńska Str., 01-919 Warsaw, Poland
Dorota A. Pawlak
Institute of Electronic Materials Technology, 133 Wólczyńska Str., 01-919 Warsaw, Poland
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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 for manufacturing 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.

Research Article
Copyright © Materials Research Society 2010

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