CRYSTAL-FIELD EFFECTS IN RARE-EARTH COMPOUNDS - INFLUENCE OF 2ND NEAREST NEIGHBORS

被引：17

作者：

FAUCHER, M

GARCIA, D

MOUNE, OK

机构：

[1] UPR 60210, CNRS, 92195 Meudon Cédex

来源：

JOURNAL OF LUMINESCENCE | 1992年 / 51卷 / 06期

关键词：

D O I：

10.1016/0022-2313(92)90063-F

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Second neighbours are taken into account in the empirical calculation of crystal field parameters of Nd3+ in mixed oxides using the covalo-electrostatic model. The goal consists in determining general rules for compounds belonging to different chemical families. The behaviours are examined and classified according to the rare earth-ligand distances and the location of second neighbours in the periodic table. The method is improved for what concerns that scale factors. The following 11 compounds are examined: Nd2O3, Y2O3:Nd3+, NdVO4, YVO4:Nd3+, NdAlO3, YAlO3:Nd3+, Y3Ga5O12:Nd3+, Ca0.8 Mg0.2Al11.8O19Nd0.2, Y3Al5O12:Nd3+, NdP5O14 and Nd3Sb5O12. Second neighbours belonging to the IIIA column display a distinctly original behaviour.

引用

页码：341 / 350

页数：10

共 38 条

[1]

ALABLANCHE S, UNPUB

[2] SIMULATION OF THE ENERGY-LEVEL SCHEME OF ND-3+ AND EU-3+ IONS IN RARE-EARTH ORTHOVANADATES AND PHOSPHATES [J].