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Study of the lattice sites of Ti and Ni impurities in LiNbO 3 single crystals, by means of X-ray absorption spectroscopy

1991; IOP Publishing; Volume: 3; Issue: 23 Linguagem: Inglês

10.1088/0953-8984/3/23/002

1361-648X

C. Zaldo, C. Prieto, H. De×pert, P. Fessler,

Solid State Laser Technologies

The structural environment of Ti and Ni ions incorporated into LiNbO3 single crystals during the growing process has been studied by using X-ray absorption spectroscopies: extended X-ray absorption fine structure (EXAFS) and X-ray absorption near-edge structure (XANES) spectroscopies. It has been found that for the impurity concentration used (1% of TiO2 and 0.1% NiO in the melt) both ions, Ti4+ and Ni2+, are incorporated at the Li site of the LiNbO3 lattice.