Project supported by the National Natural Science Foundation of China (69977005)
CdGd2 (WO4)4 -δ single crystal was grown using the Czochralski's method. The crystal structure was tetragonal seheelite with lattice parameters a = b = 0.5203 nm and c = 1. 1359 nm. There were vacancies of (WO4)...
Positron lifetime spectra were measured near the Curie temperature of gadolinium metal. The lifetime data obtained were analysed as three component lifetime spectra with the Positronfit program. It was found that the...