EPR spectroscopy of Yb3+ in LiNbO3 and Mg:LiNbO3
| Autor: | Luisa E. Bausá, A. A. Martin, E Montoya, M.C Terrile, Fernando López, E.A Vidoto, C.J Magon, David Bravo, C Bonardi |
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| Rok vydání: | 2001 |
| Předmět: |
Ytterbium
Mechanical Engineering Lithium niobate Doping Inorganic chemistry Metals and Alloys chemistry.chemical_element Crystal growth Crystallographic defect Transition metal ions law.invention Angular variation chemistry.chemical_compound Crystallography chemistry Mechanics of Materials law Materials Chemistry Electron paramagnetic resonance |
| Zdroj: | Journal of Alloys and Compounds. :340-343 |
| ISSN: | 0925-8388 |
| DOI: | 10.1016/s0925-8388(01)01058-1 |
| Popis: | Electron paramagnetic resonance (EPR) experiments have been carried out on congruent crystals of LiNbO 3 doped with Yb and crystals codoped with Mg. Crystals without Mg codoping show a complex spectrum which is attributed to slightly different centers of Yb 3+ located at the Li + site. In samples codoped with Mg a new ytterbium spectrum is detected in addition to those observed in crystals without codoping. This new Yb 3+ center is compared to additional centers observed for Er 3+ and trivalent transition metal ions (particularly Cr 3+ ) in LiNbO 3 heavily doped with Mg or Zn. On these grounds the new center can be attributed to Yb 3+ located at the Nb 5+ site of LiNbO 3 . |
| Databáze: | OpenAIRE |
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