Theoretical studies of EPR spectra and defect structure for Er3+ center in lithium niobate.
The optical and EPR spectra of octahedral Er(3+) center in LiNbO(3) have been studied by diagonalizing 364 x 364 complete energy matrices. The new set of crystal-field parameters that can well account for the Stark levels and EPR parameters have been obtained for Er(3+) ions in LiNbO(3). Simultaneously, by simulating the most reliable six-order parameter B(60) obtained, we have presented the evidence that the Er(3+) ions do not occupy the actual Li(+) site, but have a displacement along the C(3)-axis away from the Li(+) center by about 0.0454 nm. The conclusion is well in accord with that drawn by earlier workers.
Chai
Rui-Peng
RP
Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China.
Kuang
Xiao-Yu
XY
Duan
Mei-Ling
ML
Zhang
Cai-Xia
CX
D003460:Crystallization; D004578:Electron Spin Resonance Spectroscopy; D004871:Erbium / Q000737:chemistry*; D008956:Models, Chemical; D009556:Niobium / Q000737:chemistry*; D010087:Oxides / Q000737:chemistry*
D010087:Oxides; D009556:Niobium; C091692:lithium niobate; D004871:Erbium