1. Preparation and crystal structure of a new high-pressure phase (V0.5Re0.5)O2 with rutile-type structure
- Author
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Emilio Morán, Ralf Theissmann, Kirill G. Bramnik, H. Fuess, and Helmut Ehrenberg
- Subjects
Diffraction ,Inorganic chemistry ,chemistry.chemical_element ,Vanadium ,Crystal structure ,Rhenium ,Condensed Matter Physics ,law.invention ,Inorganic Chemistry ,Crystallography ,chemistry ,law ,Rutile ,Phase (matter) ,General Materials Science ,Electron microscope ,Single crystal ,Elektrotechnik - Abstract
The new complex oxide (V0.5Re0.5)O2 has been synthesized under high pressure of 60 kbar at 1000°C, and its crystal structure determined by single crystal X-ray diffraction data analysis (S.G.: P42/mnm, a = 4.6357(4) Å, c = 2.8292(3) Å, V = 60.80(1) Å3). This compound adopts a rutile-type structure with random cat ion distribution on one crystallographic site. The substitution of 50 vanadium by rhenium stabilizes the high temperature form of VO2 at room temperature. The cation ratio of 1 : 1 was confirmed by EDX analysis performed by electron microscopy on the same crystals used for X-ray diffraction.
- Published
- 2003