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研究了磁场对ＫＮｂＯ３熔体中的温度分布的影响．利用加磁场的休仑微分干涉显微实时观察装置及一种近似的间接测温方法，对在不同磁场强度０、７０、１１７、１３５ｍＴ下，ＫＮｂＯ３熔体中的径向温度分布进行测量．发现随着磁场强度的增大，熔体中的径向温度梯度减小，尤其在坩埚－熔体界面附近，浮力驱动对流占主要作用的区域，温度梯度的减小更加明显．这可能是由于磁场对熔体中浮力驱动对流抑制的结果．
The effect of magnetic field on the temperature distribution in KNbO3 melt was studied. The radial temperature distribution in KNbO3 melt at different magnetic field intensities of 0, 70, 117 and 135 mT was measured by using the Fresnel differential interference microscopic real-time observation device with magnetic field and an approximate indirect temperature measurement method. It is found that with the increase of magnetic field strength, the radial temperature gradient in the melt decreases. Especially in the area near the crucible-melt interface where buoyancy-driven convection plays a dominant role, the temperature gradient decreases more obviously. This is probably due to the magnetic field suppression of buoyancy-driven convection in the melt.