Optical characteristics and structural ordering of quasi - two - dimensional TlGaS2 crystals doped by rare-earth ions.
|Gadjibala I. Abutalybov 1, Sevda Z. Dzhafarova , Nailja A. Ragimova|
1. Azerbaijan National Academy of Sience, Institute of Physics, G.Javid, 33, Baku AZ143, Azerbaijan
The present paper shows the results of complex experimental studies of optical phenomena, electron-paramagnetic resonance, Raman scattering, and heat capacity in TlGaS2 single crystals doped with various concentrations of rare-earth (RE) ions. The autore were the first to discover that optic parameters of TlGaS2 single crystals can be improved by increasing the degree of structural ordering of the cation sublattice doping them by RE ions. The impurity ions with the ionic radii close to the radii of the main cations (Tl3+, Ga3+) and charges of main cations in the area of rather low concentrations were shown to exert an ordering effect on the cation sublattice of a congruent TlGaS2 crystal.
Presentation: poster at E-MRS Fall Meeting 2003, Symposium A, by Sevda Z. Dzhafarova
See On-line Journal of E-MRS Fall Meeting 2003
Submitted: 2003-05-27 00:34 Revised: 2009-06-08 12:55