A GROWTH APPARATUS OF MN-ZN FERRITE SINGLE CRYSTAL AND GROWTH METHOD THEREOF

摘要

A Mn-Zn ferrite single crystal ingot growing apparatus and a method for growing the same, comprising: a heating element enclosed by at least a refractory, a core pipe installed inside the heating element, and a first movable pipe installed in the core pipe to introduce an ingot. And a second auxiliary crucible and an auxiliary crucible setting device installed at an upper end of the first auxiliary crucible, the first step of performing a first temperature lowering at a predetermined lowering temperature in the first auxiliary crucible; The second step of performing the second temperature lowering to the predetermined lowering temperature in the auxiliary crucible and the third temperature lowering when the ingot growing material is melted in the first auxiliary crucible and falls into the second auxiliary crucible to raise the ingot. There is provided a third step, and a growing method in which the first to third steps are repeated.;Therefore, the gap between the initial melting raw material interface of the auxiliary crucible and the end of the auxiliary crucible can be adjusted to a certain height by the auxiliary crucible setting device, thereby preventing a large heat flow of the furnace temperature due to the melting raw material interface contact, resulting in thermal shock. Since thermal cracking is eliminated and furnace temperature is lowered in 1st, 2nd, and 3rd stages, thermal imbalance is maintained by maintaining the furnace temperature constant from the beginning to the end of single crystal ingot growth, while maintaining the original melting depth of raw materials. There is an effect of canceling the composition change due to the change in temperature and the formation of thermal cracks and composition cracks.