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

被引：32

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

页码：13859 / 13864

页数：6

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