The influence of combined magnetic fields (travelling and rotating) on the characteristics of heat/mass transfer with an aim to obtain the needed profile of the interface is considered, that is a necessary condition, which insures the homogeneity of single crystal content. The crystallization process of a cylindrical sample is considered. It was presumed that the sample moves with a permanent velocity towards the cold part of the heater and a partial-linear temperature distribution characteristic to the Bridgman method was set in along the heater's length. Permanent temperature values were set in on the top and bottom edges of the calculation mesh. It has been shown that combinations of different types of electromagnetic fields can be effective enough means for controlling the characteristics of heat and mass transfer in solidifying melts. It has been revealed that a purposeful choice of the combined electromagnetic impact can result in a uniform distribution of concentration approximately over 70% of the sample area with the zone of a non-uniform distribution being focussed either near the centre alone or near the outside boundaries of the sample alone.