期刊
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
卷 112, 期 2, 页码 739-745出版社
SPRINGER
DOI: 10.1007/s10973-012-2618-6
关键词
Solid-state synthesis; Lithium-substituted ferrite; Thermomagnetometry
资金
- Special Federal Program Research and Development on Priority Directions of Scientific and Technological Complex of Russia [16.513.11.3074]
In the present work, the possibilities of application of the thermomagnetometry TG(M)/DTG(M) method for estimation of the phase homogeneity of end products of synthesis at different stages of ferritizing annealing are considered on the example of solid-state synthesis of Li0.5(1-x)Fe2.5-0.5xZnxO4 and Li0.5(1 + x)Fe2.5-1.5xTixO4 (x = 0.1, 0.2, 0.3, 0.4, 0.5, and 0.6) lithium-substituted ferrospinels. Results of thermomagnetometric analysis are compared with XRD data. It is shown that the resolution of the TG(M)/DTG(M) method on two orders exceeds capabilities of the traditional XRD method. Considerable influence of both intermediate grinding and mixing of samples and concentration of an inducted impurity on the homogeneity of the synthesized powders is confirmed.
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