Thermal properties of pure KY(WO4)2 and K(Y1-xYbx)(WO4)2(x=0.098,0.196,0.294) crystals were investigated.The specific heat and thermal diffusivity of crystals were calculated at a range of 50～300 ℃.The calculated result shows that the specific heat and thermal diffusivity of K(Y1-xYbx)(WO4)2(x=0.098,0.196,0.294) crystals were slightly affected by the Yb3+ concentration.The thermal expansion coefficient of K(Y0.804Yb0.196)(WO4)2 crystals along x,y and z axes were determined to be 13.51,4.474 and 16.60×10-6 K-1,respectively.These results suggest the K(Y1-xYbx)(WO4)2(x=0.098,0.196,0.294) crystal as a laser crystal of low-middle power.
The Eu3+:BaMoO4 nanostructures were synthesized by a simple hydrothermal method,and characterized by XRD,transmission electron microscopy,high-resolution transmission electron microscopy,excitation and emission spectra. Eu3+:BaMoO4 nanostructures show a lotus leaf-shaped morphology,and exhibit a strong red emission at 612 nm,which may afford an opportunity for the development of other nanostructure materials.
