Выпуски

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2014

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том 12 / 

выпуск 3

 



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Б. К. Остафійчук, В. Д. Федорів, Н. В. Сташко
«Вплив технологічних умов золь–ґель-синтезу на процес формування однофазного полікристалічного залізо-ітрієвого ґранату»
0553–0563 (2014)

PACS numbers: 61.05.cp, 78.30.Hv, 81.07.Bc, 81.16.Be, 81.20.Fw, 81.70.Pg, 82.33.Ln

Three systems are synthesized by sol–gel method from yttrium nitrate, iron nitrate, and citric acid water solutions with different pH magnitudes for subsequent fabrication of Yttrium–Iron Garnet. Using the differential thermal analysis (DTA), X-ray diffraction (XRD) and infrared (IR) spectroscopy methods, physicochemical nature of thermal effects, which accompany the processes of heating of the preliminarily dried gels, is analysed. As revealed, the initial pH of the solution components and annealing atmosphere have significant effect on the process of YIG synthesis. Optimal technological conditions for synthesis of polycrystalline YIG are determined.

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