Method for producing cerium oxide, cerium oxide abrasive, method for polishing substrate using the same and method for manufacturing semiconductor device
    10.
    发明授权
    Method for producing cerium oxide, cerium oxide abrasive, method for polishing substrate using the same and method for manufacturing semiconductor device 有权
    氧化铈的制造方法,氧化铈研磨剂,使用其的研磨基板的方法以及半导体装置的制造方法

    公开(公告)号:US06615499B1

    公开(公告)日:2003-09-09

    申请号:US09979733

    申请日:2001-11-28

    IPC分类号: C09K314

    摘要: The present invention provides a method for producing cerium oxide comprising rapid heating of cerium salts to a calcining temperature to calcine them, a cerium oxide abrasive containing the cerium oxide produced by the method and pure water, an abrasive containing a slurry in which cerium oxide particles having an intensity ratio of an area of a primary peak appearing at 27 to 30° to that of a secondary peak appearing at 32 to 35° (primary peak/secondary peak) in a powder X-ray diffraction chart of 3.20 or more are dispersed in a medium, an abrasive containing a slurry in which cerium oxide particles whose bulk density is 6.5 g/cm3 or less are dispersed into a medium, an abrasive containing a slurry in which abrasive grains having pores are dispersed into a medium, a method for polishing a substrate comprising polishing a predetermined substrate using the abrasive; and a method for manufacturing a semiconductor comprising the step of polishing by the abrasive.

    摘要翻译: 本发明提供了一种生产氧化铈的方法,包括将铈盐快速加热至煅烧温度以煅烧它们,含有通过该方法生产的氧化铈的氧化铈磨料和纯水,含有其中氧化铈颗粒 在粉末X射线衍射图中,出现在32〜35°(一次峰/次峰)的二峰出现在27-30度的一次峰的面积的强度比分散在3.20以上分散 在介质中,含有其中堆积密度为6.5g / cm 3以下的氧化铈颗粒分散在介质中的浆料的研磨剂,含有其中具有孔的磨粒的浆料分散在介质中的研磨剂, 抛光衬底,包括使用研磨剂抛光预定衬底; 以及一种用于制造半导体的方法,包括通过研磨剂抛光的步骤。