| abstract |
The sedimentation in the dispersion is suppressed.nThe vanadium oxynitride represented by the general formula VOxNy (where x and y are the conditions satisfying 0<x<1.1 and 0<y<1.2) and the vanadium oxynitride coated are selected from the group consisting of SiO2 and ZrO2. a mixture of one or more of TiO2, GeO2, Al2O3, Y2O3, and P2O5, and the vanadium concentration in the mixture is 50% by mass or more and 80% by mass or less, and the total concentration of the oxides is 5% by mass or more and 20% by mass. Below %, the average value of the primary particle diameter is 70 nm or less. |