Crystalquasichemical Description the Formation of Defects in nanodispersed Yttrium-Iron Garnet

Abstract

By the sol-gel method of autocombustionan initial oxide system was synthesized for a receipt a nanodispersed Yttrium Iron Garnet. It was set that forming of the monophase system Y₃Fe₅O₁₂begins at temperatures above 973 К in static air atmosphere. The crystalquasichemical formulas for Y₃Fe₅O₁₂ are offered. Dependence of concentration of defects from a degree non-stoichiometry of oxygen is calculated. It was set that the formation of garnet structure needed oxygen atmosphere annealing. Partial pressure of oxygen determines the resulting structure defects.Keywords: yttrium iron garnet, sol-gel-autocombustion method, isothermal annealing, atmosphere, crystalquasichemical formulas, defects.