高温闪烁晶体Ce:YAP中的小角度晶界  

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

作　　者：李红军[1] 赵广军[1] 曾雄辉[1] 钱振英[1] 郭聚平[1] 周圣明[1] 徐军[1] 

机构地区：[1]中国科学院上海光学精密机械研究所,上海201800

出　　处：《无机材料学报》2004年第5期1186-1190,共5页Journal of Inorganic Materials

摘　　要：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.

关 键 词：Ce:YAP晶体 闪烁晶体 小角晶界 

分 类 号：O782[理学—晶体学]