Abstract
Thermodynamic properties of the charge density wave(CDW) transition in potassium blue bronze K 0.3 MoO 3 are investigated by the measurement of specific heat. A second order phase transition is observed at 177.5 K. The specific heat jump, and enthalpy and entropy changes associated with the transition are estimated. The results suggest that the lattice plays an important role in thermodynamics for this compound. Analysis of the data near CDW transition shows that width of critical region is about 6 K and the critical behavior belongs to the universality class of the three dimensional XY model.
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