Разработка спектральных методов анализа наноразмерных феррогранатов состава Y_3−xCe_xFe_5−yGa_yO₁₂

Исследование и разработка феррогранатов иттрия востребованы и перспективны при создании материалов для интегральной оптики и магнитной микроэлектроники. Авторами работы синтезирован нанокристаллический церий-замещенный иттрий-железо-галлиевый гранат состава Y_3-хCe_хFe_5-yGa_yO₁₂ (где х = 0.4 – 0.5, а у = 2.4 – 2.6), который отличается улучшенными магнитными и оптическими свойствами. Однако эффективность применения данного материала напрямую зависит от химической чистоты исходных веществ, а также элементного состава промежуточных и конечных продуктов. В связи с этим разработка многоэлементных, селективных и точных методов анализа является актуальной задачей. В результате проведенных исследований разработаны методики спектрального анализа церий-замещенного иттрий-железо-галлиевого граната. Изучены и установлены условия определения целевых аналитов (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) в исследуемых материалах методами ренгенофлуоресцентной спектрометрии (РФА), дуговой атомно-эмиссионной спектрометрии (ДАЭС) и масс-спектрометрии с индуктивно связанной плазмой (МС-ИСП). Предложены подходы к уменьшению и устранению основных спектральных и неспектральных помех в исследуемых методах. Разработан комплексный взаимодополняющий подход к аналитическому контролю гранатов состава Y_3-хCe_хFe_5-yGa_yO₁₂, что обеспечивает высокую точность и достоверность результатов, позволяет расширить номенклатуру целевых аналитов и границы определяемых содержаний.

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