Study on microwave absorbing properties of Mn-Zn ferrites prepared by sol-gel/combustion method

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作者：
机构：
[1] [1,Zhu, Hong-Li
[2] Zhang, Yu-Jun
[3] 1,Yu, Ming-Xun
[4] Pan, Shi-Bing
[5] Zhang, Bao-Qin
[6] Lian, Jun-Tao
来源：
Zhang, Y.-J. (yujunzhangcn@sdu.edu.cn) | 1600年 / Chinese Ceramic Society卷 / 43期
关键词：
Binary alloys - Combustion - Dielectric losses - Ferrite - Sol-gels - Particle size - Iron compounds - Sol-gel process;
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摘要：
Mn-Zn ferrite Mn0.3Zn0.7Fe2O4 was prepared by sol-gel/combustion process, and the preparation conditions were investigated. The samples were characterized by XRD, SEM, TG-DSC, Network analyzer, and so on. The results showed that the pure Mn-Zn ferrite with a uniform particle size of about 160 nm could be formed when pH value was around 7.0, the mole ratio of citrate and metal salt was 1:1, the calcining temperature was 1050°C, and the calcining time was 3 h. The as-prepared Mn0.3Zn0.7Fe2O4 ferrite performed both the dielectric loss properties and magnetic loss properties. It showed excellent microwave absorption properties with the reflection loss less than -10 dB in the frequency range of 12.5-15 GHz.
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