高温闪烁晶体Ce:YAP中的小角度晶界

无机材料学报, 2004, 19(5): 1186-1190.

高温闪烁晶体Ce:YAP中的小角度晶界

李红军 , 赵广军 , 曾雄辉 , 钱振英 , 郭聚平 , 周圣明 , 徐军

中国科学院上海光学精密机械研究所上海 201800

Chinese Academy of Sciences

Shanhgai 201800

China

关键词： Ce:YAP晶体 , scintillating crystal , low-angle boundary

Low-angle Boundary in High-temperature Scintillating Crystal Ce:YAP

LI Hong-Jun , ZHAO Guang-Jun , ZENG Xiong-Hui , QIAN Zhen-Ying , GUO Ju-Ping , ZHOU Sheng-Ming , XU Jun

Keywords： Ce:YAP crystal , 闪烁晶体 , 小角晶界

通过腐蚀形貌和XRD摇摆曲线,观察到了垂直和平行于Ce:YAP[010]方向的两组晶面内存在的小角度晶界(镶嵌结构间界),根据SEM形貌估算出(010)面内小角晶界的夹角为51”;四晶XRD摇摆曲线的结果表明,平行于[010]向的晶面内小角晶界的夹角为58”;摇摆曲线的半峰宽为54”,根据Darwin理论算出理想晶体的半峰宽为17”,并由此分析了晶体的完整性.

Two kinds of low-angle boundary (mosaic structure) in Ce:YAP were observed by etching figures and rocking-curve. From SEM figure, the boundary angle on (010) plane estimated is 51". The rocking-curve by four-crystal high-resolution XRD shows that the boundary angle on the plane paralleled with [010] is 58". The FWHM (Full Width-Half Maximum) of rocking-curve is 54", and the one of ideal YAP crystal calculated out is 17" according to Darwin s theory. The integrality of Ce:YAP sample was analyzed on the basis of these result.

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