Tailoring of Magnesium Substitution on Structure and Magnetic Properties of Lithium Ferrites

Julia Mazurenko

doi:10.15330/pcss.22.2.217-223

Authors

Julia Mazurenko Ivano-Frankivsk National Medical University

DOI:

https://doi.org/10.15330/pcss.22.2.217-223

Keywords:

Ferrites, Sol-Gel autocombustion, Structural research, Magnetic properties, Spinels, Soft magnets

Abstract

In this study is reported influence of Mg²⁺ doping on structure and magnetic properties of nano-sized Li_0.5Fe_2.5-XMg_XO₄ (0.0, 0.2, 0.4, 0.6, 0.8) synthesized using sol-gel auto-combustion method. The X-ray diffractometric and Mössbauer data analysis of samples confirmed the formation of pure Li_0.5Fe_2.5-XMg_XO₄nanoparticles ranges crystallite size from 15 nm to 35 nm. Iron ions are redistributed on the A and B sites in a ratio of approximately 4:6, and magnesium ions 8:2, respectively. The advantages of the B position of the above ions are as follows: Li+>Fe³⁺>Mg²⁺. RT-Mössbauer indicated the presence of 57Fe in both sublattices. Position identification was performed based on the distribution of the over exchange fields and isomeric shift data. Magnetic characteristics were obtained for rings made of synthesized material. They showed a non-monotonic dependence on the composition and found significantly higher rates compared to similar materials obtained by solid-phase synthesis.

Author Biography

Julia Mazurenko, Ivano-Frankivsk National Medical University

кандидат фізико-математичних наук, асистент кафедри медичної інформатики, медичної та біологічної фізики Івано-Франківського Національного медичного університету

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