Development of spectral methods for the analysis of nanocized ferrogarnets of the Y$_{3-x}$Ce$_x$Fe$_{5-y}$Ga$_y$O$_{12}$ composition

The study and development of yttrium-iron garnets are in demand and promising when creating materials for integrated optics and magnetic microelectronics. The authors synthesized nanosized ceriumsubstituted yttrium-iron-gallium garnet of the composition Y$_{3-x}$Ce$_x$Fe$_{5-y}$Ga$_y$O$_{12}$ (where $x$ = 0.4 – 0.5, and $y$ = 2.4 – 2.6), which is characterized by improved magnetic and optical properties. However, the efficiency of applying this material directly depends on the chemical purity of the source materials, as well as the elemental composition of the intermediate and final products. In this regard, the development of multi-element, selective and accurate methods of analysis is an urgent task. As a result of the studies, methods for spectral analysis of cerium-substituted yttrium-iron-gallium garnet were developed. The conditions for determining target analytes (Mg, Al, Si, Ca, Sc, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga, Se, Y, Cd, Sn, Te, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Pb) in the materials in question were studied and established using X-ray fluorescence spectrometry (XRF), arc atomic emission spectrometry (AAES) and inductively coupled plasma mass spectrometry (ICP-MS). Approaches to reducing and eliminating the main spectral and non-spectral interferences in the methods studied were proposed. A comprehensive complementary approach to the analytical control of garnets of the Y$_{3-x}$Ce$_x$Fe$_{5-y}$Ga$_y$O$_{12}$ composition was developed, which ensures high accuracy and reliability of the results, and allows one to expand the nomenclature of target analytes and the boundaries of the determined contents.