Crystal growth and characterization of new-type lead tungstate single crystal

Highlights: ► A new type lead tungstate crystal Pb3WO6 was grown by hydrothermal technique under high temperature and high pressure. ► The structure was determined by single-crystal X-ray diffraction. ► The thermal properties and scintillating properties were studied by TG–DSC and low-temperature VUV spectra, respectively. ► The relationship between structure and properties was discussed systematically. - Abstract: In this work, a new type of lead tungstate crystal (Pb3WO6) was synthesized by hydrothermal method under high temperature and high pressure. Crystal structure was characterized by single-crystal X-ray structure determination. Pb3WO6 (monoclinic, P21/c, (No. 14), a = 7.8643(6) Å, b = 9.2036(8) Å, c = 9.0652(8) Å, β = 90.299(5)°, V = 656.13(2) Å3, Z = 4) exhibited two different layered arrangements of edge-shared octahedral WO6 with six oxygen coordination along a axis. Thermal stability was investigated by TG–DSC and two phase transformations were observed at about 647 and 748 °C, respectively. Finally, VUV excitation and emission spectra of Pb3WO6 crystal were studied under the temperature 14 K. The results revealed that samples had weak luminescent properties, which exhibited excitation peak at 285 nm and emission peak at 460 nm at low temperature.