The fine structure of spectral response of Cr3+ sites in LiNbO3
| Autor(en): | Dierolf, V Kaplyanskii, AA Kapphan, S Kutsenko, AB |
Stichwörter: | CENTERS; CHROMIUM; Cr : LiNbO3; inhomogeneous broadening; LITHIUM-NIOBATE; Nuclear Science & Technology; Physics; Physics, Condensed Matter; Physics, Fluids & Plasmas; site-selective spectroscopy | Erscheinungsdatum: | 2001 | Herausgeber: | TAYLOR & FRANCIS LTD | Journal: | RADIATION EFFECTS AND DEFECTS IN SOLIDS | Volumen: | 155 | Ausgabe: | 1-4 | Startseite: | 241 | Seitenende: | 246 | Zusammenfassung: | We studied Cr3+ centers in congruent LiNbO3 crystals using the method of combined excitation emission spectroscopy. Performing a coordinate transformation of the measured experimental data the inhomogeneous broadening of the E-2-->(4)A(2) transitions of Cr3+ was directly separated into contributions from the variations of the low symmetry crystal field and of free ion parameters. At liquid helium temperatures fine structure in the spectral response of Cr3+ ``defect'' centers in high crystal field sites was observed. Our results are discussed on the basis of a microscopic hierarchic model for perturbed Cr3+ ions in the lithium niobate crystal lattice. |
Beschreibung: | 14th International Conference on Defects in Insulating Materials, JOHANNESBURG, SOUTH AFRICA, APR 03-07, 2000 |
ISSN: | 10420150 | DOI: | 10.1080/10420150108214121 |
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