Porosity of spherical (Y1−xEux)2О3 crystalline particles

Abstract The paper presents a method for estimating the porosity and the pore space structure of spherical particles (Y 1− x Eu x ) 2 О 3 according to the data on their specific surface area. Using assumptions about their fractal structure, their porosity and pore space structure of particles of different diameters was estimated. It was established that the porosity of particles increases with an increase in their diameter. Based on the calculations of the fractal dimension of the mass of particles (Y 0,95 Eu 0,05 ) 2 O 3 , it was suggested that particles with a diameter of 120–200 nm and 200–300 nm have a different pore space structure. Pore space of particles with a diameter of 120–300 nm is apparently formed by an extensive system of intercrystalline spaces – pores. Pore space in particles with a diameter of 200–300 nm is probably formed by porous clusters located between the core and the outer surface of spherical particles.