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Spectroscopy and transitions

High-pressure XRD study of β-Na0.33V2O5

, , , , , & show all
Pages 504-508 | Received 03 Sep 2009, Published online: 15 Dec 2009
 

Abstract

We have investigated the pressure-dependent structural properties of the quasi-one-dimensional metal at room temperature by high-resolution angle-dispersive powder X-ray diffraction. According to our structural data, the crystal lattice of β-Na0.33V2O5 remains monoclinic (space group C2/m) up to 20 GPa. The smallest compressibility is found along the conducting b-axis. We observe an anomaly in the pressure dependence of the lattice parameters and the volume of the unit cell in the range 12–15 GPa, in agreement with the pressure-dependent optical properties.

Acknowledgements

We acknowledge the ESRF Grenoble for the provision of beamtime. Financial support by the Bayerische Forschungs-stiftung and the DFG (Emmy Noether-program, SFB 484) is gratefully acknowledged.

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