Study of the magnetization and curie temperature of LiZn ferrite synthesized by the electron-beam heating from mechanically activated reagents | Izvestiya vuzov. Fizika. 2022. № 11. DOI: 10.17223/00213411/65/11/86

Study of the magnetization and curie temperature of LiZn ferrite synthesized by the electron-beam heating from mechanically activated reagents

In this work, the magnetization of Li_0.4Fe_2.4Zn_0.2O₄ lithium-zinc ferrite, synthesized by electron-beam heating of a mechanically activated mixture of Fe₂O₃-Li₂CO₃-ZnO initial reagents, was studied by measuring the specific saturation magnetization and the Curie temperature. Mechanical activation of the initial reagents was carried out at different times using a planetary mill and a steel set. The grinding rotation speed was 1290 and 2220 rpm. To heat the samples during the synthesis, an ILU-6 pulsed accelerator with an electron energy of 2.4 MeV was used. The synthesis temperatures were 600 and 750 °C, the synthesis time did not exceed 120 minutes. It was established that preliminary grinding of samples at 2220 rpm followed by electron beam heating at 750 °C for 120 minutes leads to the formation of the main amount of ferrite with the desired chemical formula. This is confirmed by the data on the specific saturation magnetization of 80 emu/g and the nominal value of the Curie temperature of 500 °C. The use of this mode allows to significantly reduce the ferrite synthesis temperature in comparison with traditional ceramic technology.

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Keywords

lithium-zinc ferrite, magnetization, Curie temperature, mechanical activation, electron beam

Authors

Name	Organization	E-mail
Lysenko E.N.	National Research Tomsk Polytechnic University	lysenkoen@tpu.ru
Vlasov V.A.	National Research Tomsk Polytechnic University	vlvitan@tpu.ru
Surzhikov A.P.	National Research Tomsk Polytechnic University	surzhikov@tpu.ru
Ghyngazov S.A.	National Research Tomsk Polytechnic University	ghyngazov@tpu.ru

Всего: 4

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