摘要
本文对PbWO4（PWO）晶体的着色问题进行了实验研究．以PbO和WO3粉体为原料采用改进的Bridgman法生长的PWO晶体会呈现出浅黄色，通过对实验现象的分析，提出PWO晶体中同时存在O缺位和Pb缺位．其中，O缺位是导致PWO晶体350nm透过率低的原因，Pb缺位是产生420nm吸收带使晶体着色的根源．
Based on the experiments, some coloration phenomena in PbWO4 crystals grown from the mixture of PbO and WO3 powders by a modified Bridgman method were reported. Through analyzing these experimental phenomena, it was proposed that both defects of VO and VPb exist in the PbWO4 crystals, and that Vo leads to the decrease of transmission at 350nm whereas the existence of VPb is the main cause which results in the coloration of the crystal and absorption band at 420nm.
出处
《无机材料学报》
SCIE
EI
CAS
CSCD
北大核心
1999年第6期847-852,共6页
Journal of Inorganic Materials
关键词
晶体
着色
晶体缺陷
钨酸铅
PbWO_4 crystal, coloration, crystal defects
