Electromagnetic properties of Li_0.4Fe_2.4Zn_0.2O₄ ferrite sintered by continuous electron beam heating

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• 作者：A.V. Malyshev ; ^{malyshev@tpu.ru" class="auth_mail" title="E-mail the corresponding author} ; E.N. Lysenko ; V.A. Vlasov ; S.A. Nikolaeva
• 关键词：Sintering ; Dielectric properties ; Magnetic properties ; Ferrites ; Electron beam
• 刊名：Ceramics International
• 出版年：2016
• 出版时间：1 November 2016
• 年：2016
• 卷：42
• 期：14
• 页码：16180-16183
• 全文大小：833 K

文摘

Lithium-zinc ferrite with the chemical formula of Li_0.4Fe_2.4Zn_0.2O₄ was prepared by continuous electron beam heating with electron energy of 1.4 MeV at 1100 °C for 140 min. X-ray diffraction analysis confirmed the formation of cubic spinel structure. From SEM analysis, the average grain size of the ferrite ceramic was 2 µm. The electromagnetic properties of LiZn ferrite were investigated. The samples are characterized by high values of the saturation magnetization, initial permeability and Curie temperature. The value of electrical resistivity is equal to 2.3×10³ Ω cm. The high frequency performance of LiZn ferrite samples was estimated by measurement the frequency dispersion of the dielectric constant and dielectric loss. It was shown that the dielectric constant is characterized by normal dielectric behavior with frequency. The results were compared with the previous results obtained for the samples prepared by pulsed electron beam heating.