Defect complexes in Re3+-doped magnesium sulphate phosphors.
A series of magnesium sulphate phosphors MgSO4:RE3+,X ( RE = Dy, Tm, Eu and X = P, Mn) have been prepared and studied. Based on the experimental results of thermoluminescence (TL) emission spectra and dose responses studies, it is proposed that in these phosphors large defect complexes are formed, which include intrinsic imperfections and dopants. These defect complexes were formed in the course of preparation of phosphors and could be regarded as basic elements in the TL multi-stage processes. This defect model might be applicable to the most of TL materials.
Luo
D L
DL
Department of Physics, Zhongshan University, Guangzhou 510275, China.
Tang
Q
Q
Zhang
C X
CX
D016477:Artifacts; D003198:Computer Simulation; D017076:Computer-Aided Design; D004307:Dose-Response Relationship, Radiation; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005720:Gamma Rays; D008278:Magnesium Sulfate / Q000737:chemistry* / Q000528:radiation effects*; D008422:Materials Testing; D008956:Models, Chemical; D011829:Radiation Dosage; D015203:Reproducibility of Results; D012211:Rhenium / Q000737:chemistry* / Q000528:radiation effects*; D012680:Sensitivity and Specificity; D013819:Thermoluminescent Dosimetry / Q000295:instrumentation* / Q000379:methods
D012211:Rhenium; D008278:Magnesium Sulfate