Displacement and luminescence of Eu3+ in CaYBO4

被引:0
作者
Zeng, XQ
Hong, GY
You, HP
Kim, CH
机构
[1] Chinese Acad Sci, Changchun Inst Appl Chem, Lab Rare Earth Chem & Phys, Changchun 130022, Peoples R China
[2] Korea Inst Sci & Technol, Div Appl Sci, Seoul 130650, South Korea
关键词
rare earths; europium; CaYBO4; lattice displacement; luminescence;
D O I
暂无
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
CaY1-xBO4: xEu was synthesied by solid state reaction method, and the displacement and luminescence of the Eu3+ in CaYBO4 host were studied. Two luminescent centers could be observed at certain Eu3+-concentration, indicating that the Eu3+ occupies two different crystallographic sites. This result shows that the Eu3+ occupies two different Y3+ sites in CaYBO4. The investigation on Eu-O charge transfer bands indicates that the larger distortion or the lower symmetry of Eu3+ site is,the shorter wavelength of the Eu-O charge transfer band is. When the Eu3+-concentration is high (x > 0.10), Eu3+ occupies the sites of Ca2+ and is reduced to Eu2+.
引用
收藏
页码:182 / 185
页数:4
相关论文
共 11 条
[11]   ANOMALOUS RARE-EARTH EMISSION IN MAGNESIUM FLUOROBORATE [J].
VANDERVOORT, D ;
BLASSE, G .
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1991, 52 (09) :1149-1154