| abstract |
Provided is a core-shell structure in which the thickness of the shell part is controlled to a nano level and the characteristics obtained by the material of the core part, in particular, the heat resistance is improved. A core portion mainly composed of a first metal oxide and a shell portion mainly composed of a second metal oxide different from the first metal oxide. A core-shell structure is provided, characterized in that the thickness is 20 nm or less. [Selection] Figure 2 |