R. Fernandez-ruiz et J. Capmany, Determination of the rare-earth : Nb mass ratio in doped LiNbO3 by the TXRF technique, J ANAL ATOM, 16(8), 2001, pp. 867-869
This paper describes a new method for evaluating the mass contents of rare-
earth elements used as dopants in LiNbO3 single crystals with respect to Nb
. The method is based on the technique of total-reflection X-ray fluorescen
ce (TXRF). The method presented does not require chemical manipulation of t
he samples and is rapid (30 min sample preparation and 10 min analysis), pr
ecise (between 2 and 8% of variation coefficient) and simple.