Effect of Bismuth Oxide on the Structure, Electrical Resistance, and Magnetization of Lithium Zinc Ferrite

The structural, electrical, and magnetic properties of lithium zinc ferrite prepared by ceramic technology have been studied. The composition of lithium zinc ferrite is Li 0.4 Fe 2.4 Zn 0.2 O 4 with 1 and 2 wt % bismuth oxide. The addition of Bi 2 O 3 prior to sintering of the samples has been shown...

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Bibliographic Details
Published in:Physics of metals and metallography 2024-04, Vol.125 (4), p.401-405
Main Authors: Nikolaeva, S. A., Elkina, Yu. S., Lysenko, E. N., Nikolaev, E. V., Vlasov, V. A.
Format: Article
Language:English
Subjects:
Bismuth oxides
Bismuth trioxide
Chemistry and Materials Science
Curie temperature
Electrical and Magnetic Properties
Lithium
Magnetic properties
Magnetic saturation
Materials Science
Metallic Materials
Sintering (powder metallurgy)
Zinc ferrites
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Summary:The structural, electrical, and magnetic properties of lithium zinc ferrite prepared by ceramic technology have been studied. The composition of lithium zinc ferrite is Li 0.4 Fe 2.4 Zn 0.2 O 4 with 1 and 2 wt % bismuth oxide. The addition of Bi 2 O 3 prior to sintering of the samples has been shown to affect the structural, electrical, and magnetic properties of the ferrite. A significant increase in density from 4.47 to 4.65 g/cm 3 and a decrease in porosity from 4.8 to 2.3% have been observed when the concentration of bismuth oxide has been increased to 2 wt %. The Bi 2 O 3 -containing samples have higher specific electrical resistivity compared to that of the additive-free lithium zinc ferrite. The introduction of bismuth oxide has reduced the specific saturation magnetization from 70.55 to 54.76 G cm 3 /g. The Curie temperature has not changed significantly. An optimal combination of macroscopic properties of ferrite has been found at 1 wt % Bi 2 O 3 concentration.
ISSN:0031-918X
1555-6190
DOI:10.1134/S0031918X2460009X