Analysis of the phase composition and homogeneity of ferrite lithium-substituted powders by the thermomagnetometry method

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Abstract

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 Li 0.5(1-x)Fe2.5-0.5xZnxO4 and Li 0.5(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.

Original languageEnglish
Pages (from-to)739-745
Number of pages7
JournalJournal of Thermal Analysis and Calorimetry
Volume112
Issue number2
DOIs
Publication statusPublished - 1 May 2013

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Keywords

  • Lithium-substituted ferrite
  • Solid-state synthesis
  • Thermomagnetometry

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry

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