Theoretical and Structural Study of Axial Symmetry Ce3+ Centers in the BaWO4 Single Crystal Doped with Cerium and Codoped with Sodium Ions

被引：0

作者：

Bodziony, Tomasz ^{[1
]}

机构：

[1] West Pomeranian Univ Technol Szczecin, Al Piastow 17, PL-70310 Szczecin, Poland

来源：

MATERIALS | 2022年 / 15卷 / 16期

关键词：

electron paramagnetic resonance (EPR); crystal field theory; spin Hamiltonian; tetragonal symmetry; BaWO4; Ce3+; Na+; SPIN-HAMILTONIAN PARAMETERS; EPR G-FACTORS; ER3+; PHOSPHORS; GROWTH; CAWO4; FIELD; YB3+;

D O I：

10.3390/ma15165749

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The spin-Hamiltonian parameters g-factors (g(parallel to) and g(perpendicular to)) of the Ce3+ paramagnetic centers in BaWO4: Ce and BaWO4: Ce, Na single crystals with axial symmetry are investigated using the superposition model (SPM) via complete diagonalization procedure of energy matrix (CDM method). The calculated g-factors are in reasonable agreement with the experimental values. The fitted intrinsic parameters are comparable with data from other publications for rare-earth paramagnetic centers in a similar environment. The angular distortions of the cerium dodecahedron [CeO8] are also studied. Structural analysis of paramagnetic centers with axial symmetry through the postulated cerium barium tetrahedron [CeBa4] connected via oxygens bridges was carried out. The mechanism of the charge compensation and the role of the second dopant (Na+) is also discussed.

引用

页数：12

共 37 条

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Basiev TT, 2004, LASER PHYS, V14, P917

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