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K. G. Bramnik, H. Ehrenberg, R. Theissmann, Hartmut Fuess, E. Morán

Preparation and crystal structure of a new high-pressure phase (V_0.5Re_0.5)O₂ with rutile-type structure

The new complex oxide (V_0.5Re_0.5)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) ų). 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.

Zeitschrift für Kristallographie, Oldenbourg Wissenschaftsverlag

Print ISSN: 0044-2968
Volume: 218, 07/2003
Pages: 455

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