The objective of this paper is to show (numerically in the framework of a mathematical model) that using a nonuniform initial dopant repartition, given by an explicit formula, the prescribed constant axial dopant concentration c(cr) = 1 can be achieved on the solidified fraction 0-0.7 in a thin doped crystal, grown in strictly zero-gravity by Bridgman-Stockbarger method. It is also shown that the magnitude of the axial compositional nonuniformities of the crystal is small on the solidified raction 0-0.7. (C) 2002 Elsevier Science B.V. All rights reserved.