HIGH PRESSURE SPECTRA AND CRYSTAL PARAMETERS OF Na5 Eu(WO4)4 MICROCRYSTAL

Guo Changxin; He Yuefeng; Li Bilin; Cui Hongbin

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HIGH PRESSURE SPECTRA AND CRYSTAL PARAMETERS OF Na₅ Eu(WO₄)₄ MICROCRYSTAL

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- HIGH PRESSURE SPECTRA AND CRYSTAL PARAMETERS OF Na₅ Eu(WO₄)₄ MICROCRYSTAL
- Chinese Journal of Luminescence Vol. 13, Issue 3, Pages: 200-208(1992)
- 作者机构：
  
  1. 中国科学技术大学物理系
  2. 中国科学技术大学结构分析研究开放实验室合肥,230026
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：08 October 1991，
  
  Published：30 August 1992
- 稿件说明：
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郭常新, 何越峰, 李碧琳, 崔宏滨. 高压下Na5Eu(WO4)4的光谱和晶场参数 [J]. 发光学报, 1992,13(3): 200-208

Guo Changxin, He Yuefeng, Li Bilin, Cui Hongbin. HIGH PRESSURE SPECTRA AND CRYSTAL PARAMETERS OF Na5 Eu(WO4)4 MICROCRYSTAL[J]. Chinese Journal of Luminescence, 1992,13(3): 200-208
郭常新, 何越峰, 李碧琳, 崔宏滨. 高压下Na5Eu(WO4)4的光谱和晶场参数 [J]. 发光学报, 1992,13(3): 200-208 DOI：

Guo Changxin, He Yuefeng, Li Bilin, Cui Hongbin. HIGH PRESSURE SPECTRA AND CRYSTAL PARAMETERS OF Na5 Eu(WO4)4 MICROCRYSTAL[J]. Chinese Journal of Luminescence, 1992,13(3): 200-208 DOI：

摘要

四钨酸铕钠Na

Eu(WO

)

是化学计量的基质发光材料

发光来源于基质中高浓度的Eu

.本工作用金刚石对顶砧显微高压光谱系统

在0～8GPa范围内研究了Na

Eu(WO

)

的Eu

室温光谱

确定了各发射谱线在高压下的红移率.根据晶场理论

确定了Eu

各能级用晶场参数表示的公式

并与高压下谱线位置实验值定出的能级值拟合

计算出晶场参数

(kq=20、40、44、60、64)随压力的变化率Δ

/Δ

Abstract

Eu(WO

)

is a good stoichimetric host luminescent material.The light emission eomes from high concentration host ions Eu

.The effects of hydropressure on fluorescence of Eu

in Na

Eu(WO

)

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

(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

(kq=20、40、44、60 and 64)to pressure variation Δ

are calculated.

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