Spinel compound oxide particle, method for producing the same, resin composition including spinel compound oxide particle, and molded article

A method for producing the spinel compound oxide particle comprising:

• metallic atoms, aluminum atoms, oxygen atoms, and molybdenum atoms,
• wherein the metallic atoms are selected from the group consisting of zinc atoms,
• cobalt atoms, and strontium atoms, and
• a crystallite size in a [111] plane is 100 nm or more;
• the method comprising:
• a step (1) of firing a first mixture (A-1) including a molybdenum compound and a metallic-atom-containing compound or a first mixture (A-2) including a molybdenum compound, a metallic-atom-containing compound, and an aluminum compound to prepare an intermediate;
• and
• a step (2) of firing, at a temperature higher than a temperature selected in the step (1), in a case of using the mixture (A-2), a second mixture including the intermediate, or, in a case of using the mixture (A-1), a second mixture including the intermediate and an aluminum compound, to produce the spinel compound oxide particle,
• wherein the metallic-atom-containing compound is selected from the group consisting of zinc-containing compounds, cobalt-containing compounds, and strontium-containing compounds.

A method for producing the spinel compound oxide particle comprising:

• metallic atoms, aluminum atoms, oxygen atoms, and molybdenum atoms,
• wherein the metallic atoms are selected from the group consisting of zinc atoms,
• cobalt atoms, and strontium atoms, and
• a crystallite size in a [111] plane is 100 nm or more;
• the method comprising:
• a firing step of subjecting a metallic-atom-containing compound and an aluminum compound in the presence of molybdenum atoms to solid solution formation and crystal formation to cause crystal growth to the spinel compound oxide particle;
• and
• a cooling step of crystallizing the spinel compound oxide particle provided by the crystal growth in the firing step,
• wherein the metallic-atom-containing compound is selected from the group consisting of zinc-containing compounds, cobalt-containing compounds, and strontium-containing compounds.