Single crystals of TlMo6O17 purple bronze have been grown using a temperature gradient flux technique. TlMo6O17 is trigonal with space group P3 or P3 and a = 5.543(2) A ̊, c = 14.000(2) and appears to be isostructural with K0.9Mo6O17. The transport properties of TlMo6O17 are similar to that of K0.9Mo6O17. The temperature dependence of the resistivity shows a metal-metal transition at ∼113K, probably associated with a charge-density-wave driven phase transition. The magnetic susceptibility decreases sharply near the temperature of the anomaly seen in the resistivity. The electronic properties of the quasi 2D purple bronzes, A0.9Mo6O17 with A = Li, Na, K, Tl are compared. It is shown that despite the similarity of the basic Mo6O17 network structure in all, the properties vary substantially with the A cations. In contrast, the quasi 1D blue bronzes, A0.3MoO3 with A = K, Rb, Tl have nearly identical transport properties.
All Science Journal Classification (ASJC) codes
- Condensed Matter Physics
- Materials Chemistry