用于高温光学实时观察的磁场装置

Application of the Magnetic Field to High Temperature Optical in Situ Observation Technique

最近在我们实验室里建立了一套加磁场高温光学实时观察装置．作为磁场发生器的电磁铁，在发热体中心最高可产生0.14T的侧向磁场．运用这套加磁场实时观察装置，能有效地阻抑KNbO_3熔体内的重力对流，减少界面边界层厚度．

A magnetic-field applied to high temperature optical in situ observation (M in situ observation) technique was established in the authors' laboratory. An electromagnet was used as amagnetic field generator. This magnet was designed to supply up to 0.14T transversely to thecenter of the heater.By using M in situ observation technique, the relative extent of boundary layer can be reducedand the buoyancy driven convection can also be damped. The effect of the magnetic-field uponoxide crystal growth was verified tentatively.