M.F.Dubovik, E.F.Dolzhenkova, V.N.Baumer, A.V.Tolmachev
Received December 8, 1999
Li2B4O7:Eu,
Tm, Ce single
crystals up to 40 mm in diameter and more than 30 mm in length
were grown by Czochralski method at the pulling rates of 0.5 to 1.0 mm/h
and rotation ones of 10 to 18 rot/min in a furnace with resistance
heating as well as in a SKIF-5 unit with induction heating under programmed
variation of the controlled parameter, namely, temperature or power.
Using X-ray structure analysis and chemical etching, the activation
with 0.07 % (mass.) Ln3+ has been shown no deteriorate
appreciably the crystal quality.