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Title: TG study of the Li[0.4]Fe[2.4]Zn[0.2]O[4] ferrite synthesis
Authors: Lysenko, Elena Nikolaevna
Nikolaev, Evgeny Vladimirovich
Surzhikov, Anatoly Petrovich
Keywords: ферриты; синтез; кинетический анализ
Issue Date: 2016
Publisher: IOP Publishing
Citation: Lysenko E. N. TG study of the Li[0.4]Fe[2.4]Zn[0.2]O[4] ferrite synthesis / E. N. Lysenko, E. V. Nikolaev, A. P. Surzhikov // IOP Conference Series: Materials Science and Engineering. — 2016. — Vol. 110 : Radiation-Thermal Effects and Processes in Inorganic Materials (RTEP2015) : International Scientific Conference, 31 August to 10 September 2015, Tomsk, Russia : [proceedings]. — [012092, 6 p.].
Abstract: In this paper, the kinetic analysis of Li-Zn ferrite synthesis was studied using thermogravimetry (TG) method through the simultaneous application of non-linear regression to several measurements run at different heating rates (multivariate non-linear regression). Using TG-curves obtained for the four heating rates and Netzsch Thermokinetics software package, the kinetic models with minimal adjustable parameters were selected to quantitatively describe the reaction of Li-Zn ferrite synthesis. It was shown that the experimental TG-curves clearly suggest a two-step process for the ferrite synthesis and therefore a model-fitting kinetic analysis based on multivariate non-linear regressions was conducted. The complex reaction was described by a two-step reaction scheme consisting of sequential reaction steps. It is established that the best results were obtained using the Yander three-dimensional diffusion model at the first stage and Ginstling-Bronstein model at the second step. The kinetic parameters for lithium-zinc ferrite synthesis reaction were found and discussed.
Appears in Collections:Материалы конференций

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