Guo Changxin, He Yuefeng, Li Bilin, Cui Hongbin. HIGH PRESSURE SPECTRA AND CRYSTAL PARAMETERS OF Na<sub>5</sub> Eu(WO<sub>4</sub>)<sub>4</sub> MICROCRYSTAL[J]. Chinese Journal of Luminescence, 1992,13(3): 200-208
Guo Changxin, He Yuefeng, Li Bilin, Cui Hongbin. HIGH PRESSURE SPECTRA AND CRYSTAL PARAMETERS OF Na<sub>5</sub> Eu(WO<sub>4</sub>)<sub>4</sub> MICROCRYSTAL[J]. Chinese Journal of Luminescence, 1992,13(3): 200-208DOI:
is a good stoichimetric host luminescent material.The light emission eomes from high concentration host ions Eu
3+
.The effects of hydropressure on fluorescence of Eu
3+
in Na
5
Eu(WO
4
)
4
have been invistigated under 0-80kbar at room temperature using a diamond anvil high pressure microspeetroscopic system.According to crystal field theory
the crystal parameter formulars of energy levels of Eu
3+
(in approximatary D2d point group symmetary site)are determind and fit with the experimental data of energy levels under high pressure.Then the ratios of crystal parameter variation