MAGNESIUM FLUORIDE PARTICLE, METHOD FOR PRODUCING MAGNESIUM FLUORIDE PARTICLE, MAGNESIUM FLUORIDE PARTICLE DISPERSION, METHOD FOR PRODUCING MAGNESIUM FLUORIDE PARTICLE DISPERSION, COMPOSITION FOR FORMING LAYER HAVING LOW REFRACTIVE INDEX, METHOD FOR PRODUCING COMPOSITION FOR FORMING LAYER HAVING LOW REFRACTIVE INDEX, SUBSTRATE WITH LAYER HAVING LOW REFRACTIVE INDEX, AND METHOD FOR PRODUCING SUBSTRATE WITH LAYER HAVING LOW REFRACTIVE INDEX

摘要

This magnesium fluoride particle comprises at least one magnesium fluoride microparticle; each of the at least one magnesium microparticle has pores that support a substance to be supported. Furthermore, the at least one magnesium microparticle is a plurality of microparticles, and between adjacent microparticles of the plurality of microparticles, there are particle boundary cavity-shaped pores serving as gaps for supporting the substance to be supported.