Patent ID: 8357311
Filing Date: 2013-01-22
Classification: B24B,C01F,C01G,C01P,C09G,C09K,H01L

Abstract:
1. A polishing liquid composition comprising: composite oxide particles containing cerium and zirconium; a dispersing agent; and an aqueous medium, wherein a powder X-ray diffraction spectrum of the composite oxide particles obtained by CuKα1 ray, where λ=0.154050 nm, irradiation includes a first peak having a peak top in a diffraction angle 2θ range of 28.61 to 29.67°, wherein θ is a Bragg angle, a second peak having a peak top in a diffraction angle 2θ range of 33.14 to 34.53°, a third peak having a peak top in a diffraction angle 2θ range of 47.57 to 49.63°, and a fourth peak having a peak top in a diffraction angle 2θ range of 56.45 to 58.91°, wherein a half-width of the first peak is 0.8° or less, and wherein when there is at least one peak of a peak a