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  Journal of Spectroscopy and Dynamics 2011, 1: 6
  Research Article
 
Low temperature magnetic measurements of LiNbO3 single crystal weakly doped with Er and codoped with Tm ions
  T. Bodzionya, S. M. Kaczmareka, R. Krukb  
     
a Institute of Physics, West Pomeranian University of Technology, 70-310 Szczecin, Al. Piastów 17, Poland
b Institute of Nanotechnology, Forschungszentrum Karlsruhe GmbH, P.O. Box 3640, D-76021 Karlsruhe, Germany

   
  Abstract  
  Magnetic susceptibility measurements of weakly double doped lithium niobate LiNbOsub>3: Er (0.2 wt. %), Tm (0.3 wt. %) single crystal are reported. The dependence of the magnetic susceptibility versus temperature shows complex behavior revealing that the susceptibility may be treated as a sum of the contributions of various entities present: erbium and thulium ions, pairs and/or dimers of rare-earth ions. The results of the magnetic susceptibility measurements allow us to conclude that the distribution of rare-earth ions in weakly doped LiNbO3: Er (0.2 wt. %), Tm (0.3 wt. %) single crystal may be strongly inhomogeneous.
     
  Keywords  
  Lithium niobate; Magnetic susceptibility; Er3+; Tm3+; Rare – earth ions  
     
   
   
   
   
     

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