Co substituted BaFe12O19 ceramics with enhanced magnetic resonance behavior and microwave absorption properties in 2.6-18 GHz

被引：31
作者：
Feng, Gangli [1 ]
Zhou, Wancheng [1 ]
Deng, Hongwei [1 ,2 ]
Chen, Dan [1 ]
Qing, Yuchang [1 ]
Wang, Chunhai [1 ]
Luo, Fa [1 ]
Zhu, Dongmei [1 ]
Huang, Zhibin [1 ]
Zhou, Yingying [1 ,3 ]
机构：
[1] Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Shaanxi, Peoples R China
[2] AECC Shenyang Engine Res Inst, Shenyang 110015, Liaoning, Peoples R China
[3] Xian Aeronaut Univ, Xian 710077, Shaanxi, Peoples R China
来源：
CERAMICS INTERNATIONAL | 2019年 / 45卷 / 11期
基金：
中国国家自然科学基金;
关键词：
BaFe12-xCOxO19; Magnetic properties; Microwave absorbers; Microwave absorption; ENTROPY ALLOY POWDERS; ABSORBING PROPERTIES; HEXAGONAL FERRITES; THIN-THICKNESS; GRAPHENE; PERFORMANCE; COMPOSITES;
D O I：
10.1016/j.ceramint.2019.04.083
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
BaFe12-xCOxO19 (BFCO, x <= 0.4) ceramics with superior magnetic and electromagnetic (EM) properties were prepared using Co3+ substituted BaFe12O19 (BFO) in 2.6-18 GHz. Compared with the ceramics without Co3+, the incorporation of 40 mol% Co3+ enhances magnetic properties; the saturation magnetization (M-S) is improved by about 55.6 emu.g(-1) due to the variety of magnetocrystalline anisotropy. The resonance behaviors of complex permeability are observed and resonance frequency shifts to lower frequency range from 6 to 3 GHz. The minimum reflection loss (RL) of - 32.1 dB ( < -10 dB) is obtained at 11.2 GHz in 8.5-13.5 GHz at 2.0 mm thickness in the sample with x = 0.4, which suggests that such ceramics is highly promising as effective microwave absorbers for EM applications.
引用
收藏
页码：13859 / 13864
页数：6
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