Liu Shenxin, Chi Yuanbin, Zhao Xuyi, Wang Lizhong, Zhao Futan. EMISSION SPECTRA OF LiYF<sub>4</sub>:Eu UNDER STATLC PRESSURE[J]. Chinese Journal of Luminescence, 1997,18(3): 185-190
Liu Shenxin, Chi Yuanbin, Zhao Xuyi, Wang Lizhong, Zhao Futan. EMISSION SPECTRA OF LiYF<sub>4</sub>:Eu UNDER STATLC PRESSURE[J]. Chinese Journal of Luminescence, 1997,18(3): 185-190DOI:
: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
5
D
0
1
and
7
F
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 10.5GPa. This phenomenon shows that a structure phase transition occurred in LiYF
4
:Eu and the crystal symmetry lowered at the pressure range.