Magnetic susceptibility of NaxV2O5−β

Abstract
The magnetic properties of Nax V2 O5−β vanadium bronzes have been studied on single crystals with x=0.20, 0.30 and 0.33. Curie behaviour has been found for all samples. For x=0.33, a magnetic transition takes place at T1?18 K. The initial reversible susceptibility, thermoremanent and isothermal remanent magnetizations have been measured at T4+. It is also proposed that there could be a weak ferromagnetism along the b↘‐axis.