公开(公告)号：US5268061A

公开(公告)日：1993-12-07

申请号：US950214

申请日：1992-09-24

申请人： Kuk H. Sunwoo ,  Jae Y. Ma ,  Tae H. Kim

发明人： Kuk H. Sunwoo ,  Jae Y. Ma ,  Tae H. Kim

IPC分类号： C30B15/24 ,  C30B15/00 ,  C30B15/34 ,  C30B29/22 ,  C30B15/22

CPC分类号： C30B15/34 ,  C30B15/00 ,  C30B29/24 ,  Y10T117/1008 ,  Y10T117/1036 ,  Y10T117/1068

摘要： A method and apparatus for producing a manganese-zinc ferrite single crystal using a local liquid pool formation which involves melting of a starting material in a crucible and lowering of the temperature of crucible to make the resultant melt maintain form three phase regions of an upper liquid pool region, an intermediate semi-rigid region and a lower solid region. A pair of heaters are disposed at the upper and side wall portions of crucible and controlled differently from each other so that the formed lower solid region extends at its peripheral portion throughout the inner surface of the side wall portion of the crucible, thereby minimizing the contact of the formed upper liquid pool region with the whole inner surface of the crucible. For monitoring respective temperatures of various portions in the crucible to control the heaters, there are provided thermocouples which includes a thermocouple for the crystal drawing port member, a thermocouple for the upper portion of crucible, a thermocouple for the upper portion of the side wall of crucible and a thermocouple for the lower portion of crucible.

摘要翻译： 一种使用局部液体池形成生产锰锌铁氧体单晶的方法和装置，其包括在坩埚中熔化原料并降低坩埚的温度以使所得熔体保持形成上部液体的三相区域 池区域，中间半刚性区域和下部固体区域。 一对加热器设置在坩埚的上壁部分和侧壁部分，并且彼此不同地控制，使得形成的下部固体区域在其周边部分延伸贯穿坩埚的侧壁部分的内表面，从而使接触最小化 形成的上部液体池区域与坩埚的整个内表面。 为了监测坩埚中各部分的温度以控制加热器，提供了热电偶，其包括用于晶体抽出口部件的热电偶，用于坩埚上部的热电偶，用于上部侧壁的热电偶 坩埚和用于坩埚下部的热电偶。