静压下LiYF_4:Eu的发射光谱  

EMISSION SPECTRA OF LiYF 4∶Eu UNDER STATLC PRESSUREC2

作　　者：刘慎薪[1,2] 池元斌 赵绪义[1,2] 王立中 赵福潭 

机构地区：[1]中国科学院长春物理研究所 [2]中国科学院激发态物理开放研究实验室

出　　处：《发光学报》1997年第3期185-190,共6页Chinese Journal of Luminescence

摘　　要：室温下，利用金刚石对顶砧压机，在常压到１５ＧＰａ压力范围内，测量了ＬｉＹＦ４Ｅｕ的发射光谱，研究了５Ｄ０，１和７Ｆ１－４各多重态晶场能级随压力的变化．当升压或降压经过１０．０～１０．５ＧＰａ压力范围时，发射光谱发生显著变化，某些谱线劈裂为两条，表明ＬｉＹＦ４Ｅｕ发生了结构相变。The emission spectra of LiYF 4∶Eu under high pressure up to 15GPa have been measured at room temperature. On the basis of the spectra the dependence of the stark levels of 5D 0,1 and 7F 1-4 multiplets on pressure have been investigated. An obvious change in the spectra occurred and some spectral lines split into two at pressure range from 10.0 to 10.5 GPa. This phenomenon shows that a structure phase transition occurred in LiYF 4∶Eu and the crystal symmetry lowered at the pressure range.

关 键 词：发射光谱 高压 LiYF4:Eu 相变 激光材料 

分 类 号：TN244[电子电信—物理电子学] O433.5[机械工程—光学工程]