Abstract
The pressure dependence of phase transitions in the quasi-one-dimensional vanadium oxide has been studied by magnetic susceptibility and electrical resistivity measurements. The pressure dependence of the various transition temperatures is quite different. The transition at previously reported and attributed to ordering on Na sites, and a second transition at reported here and attributed to a further increase of order on Na sites, are almost independent of pressure. On the other hand, the metal-insulator (MI) transition at shifts to lower temperatures, while the magnetic transition at shifts to higher temperatures with increasing pressure. We discuss the different pressure dependencies of and in terms of increasing interchain coupling and the MI transition to be of Peierls type.
- Received 12 March 2002
DOI:https://doi.org/10.1103/PhysRevB.66.085117
©2002 American Physical Society