Effect of pH of the Reaction Medium on the Structure and Properties of Spinel-Type Ferrite Nanopowder

Journal Title: Фізика і хімія твердого тіла - Year 2017, Vol 18, Issue 1

Abstract

In this work by using sol-gel auto-combustion synthesis was synthesized single-phase magnesium-substituted lithium ferrite at different pH reaction medium. The synthesized materials were investigated by X-ray and Mossbauer methods. It was shown that the pH of the reaction medium plays a crucial role in the formation of the microstructure and properties of synthesized systems. Nanosize particle of magnesium-substituted lithium ferrites Li0.5Fe2.5-xMgxO4 (0.0<x<1.0) were synthesized using sol-gel autocombusting method. Structural characteristics of the samples were received by using X-ray diffraction (XRD) and SEM (emission electron spectroscopy) analysis. XRD research confirmed that single phase spinel structure with crystallite size in the vicinity of 15 – 30 nm were formed. M-H loop was recorded using ferometra F-64. For all compositions were received hysteresis settings at room temperature and 50 Hz. Hysteresis loop of the samples showed a clear saturation at appositional field 60 ± E and by nature is very symmetrical. Dielectric parameters such as dielectric constant resistivity ( and ) and samples conductivity investigated as a function of the frequency range from 0.01 Hz to 100 kHz in the temperature range 293 – 493 K using the impedance spectrometer. Dielectric constant of samples revealed normal dielectric dependent on frequency, which says that the dispersion is a consequence of the grain Maxwell-Wagner-type boundaries polarization and electron hopping between ions Fe2+and Fe3+.

Authors and Affiliations

B. K. Ostafiychuk, L. S. Kaykan, Y. S. Kaykan, A. B. Hrubyak, M. O. Nykoliuk

Keywords

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  • EP ID EP263685
  • DOI 10.15330/pcss.18.1.102-110
  • Views 71
  • Downloads 0

How To Cite

B. K. Ostafiychuk, L. S. Kaykan, Y. S. Kaykan, A. B. Hrubyak, M. O. Nykoliuk (2017). Effect of pH of the Reaction Medium on the Structure and Properties of Spinel-Type Ferrite Nanopowder. Фізика і хімія твердого тіла, 18(1), 102-110. https://europub.co.uk/articles/-A-263685