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Cr3+ IONS IN HYDROGENATED AND PROTON EXCHANGED LiNbO3 CRYSTALS
|Agata Kaminska 2, Luis Arizmendi 1, Andrzej Suchocki|
1. Universidad Autonoma de Madrid (UAM), Cantoblanco, Madrid 28034, Spain
Lithium niobate (LN) crystals remain of the interest for applications as well as for fundamental studies. The Cr3+ ions turned out to be a very good probe of that structure since they substitute for both Li or Nb ions in LN host. Several studies with use of EPR and ENDOR techniques have been performed that helped to identify several Cr3+ centers both in Li (CrLi) and Nb (CrNb) sites. Also high-pressure low-temperature optical spectroscopy was very successful in identification of optically active Cr3+ centers. High-pressure application transforms low-strength crystal field of Cr3+ centers into high-strength crystal field, what increases spectral resolution of the measurements and allows for their easier characterization.
Presentation: oral at E-MRS Fall Meeting 2003, Symposium A, by Agata Kamińska
See On-line Journal of E-MRS Fall Meeting 2003
Submitted: 2003-05-27 09:30 Revised: 2009-06-08 12:55