Experiments on influence of magnetic field on distribution of temperature in KNbO3 melt

The effect of magnetic field on temperature distribution in KNbO3 melt was experimental studied. By utilizing a special temperature measurement technique, the KNbO3 melt temperature distribution in a 2mm diameter platinum crucible was measured under 0, 70, 117, 135mT transverse magnetic field respectively. The results show that the temperature gradient along crucible radius decreases with magnetic intensity increasing, especially, the temperature gradient close to crucible-melt interface where the buoyancy- driven convection is the main convection form decreases greatly. It may implie that magnetic field can damp up the buoyancy-driven convection in KNbO3 melt.