Optimization of ZnxFe3-xO4 Hollow Spheres for Enhanced Microwave Attenuation

被引：69

作者：

Yang, Zhihong ^{[1
,2
]}

Li, Zhengwen ^{[1
]}

Yang, Yanhui ^{[2
]}

Xu, Zhichuan J. ^{[3
]}

机构：

[1] Natl Univ Singapore, Temasek Labs, Singapore 117411, Singapore

[2] Nanyang Technol Univ, Sch Chem & Biomed Engn, Singapore 637459, Singapore

[3] Nanyang Technol Univ, Sch Mat Sci & Engn, Singapore 639798, Singapore

来源：

ACS APPLIED MATERIALS & INTERFACES | 2014年 / 6卷 / 24期

关键词：

hollow spheres; magnetic materials; solvothermal process; microwave attenuation; ABSORPTION PROPERTIES; MAGNETIC-PROPERTIES; ZINC FERRITE; NANOPARTICLES;

D O I：

10.1021/am5075612

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We report here the composition optimization of ZnxFe3-xO4 hollow nanospheres for enhancing microwave attenuation. ZnxFe3-xO4 hollow nanospheres were synthesized through a simple solvothermal process. The maximum magnetization moment of 91.9 emu/g can be obtained at x = 0.6. The composite filled with Zn0.6Fe2.4O4 exhibited the bandwidth of 3.21-8.33 GHz for RL < -10 dB and a maximum relative bandwidth (Wp,max) of 88.6% at optimized thickness t0 = 0.34 cm. The enhancement should be attributed to the enhanced permeability resonance at high frequency. This optimized hollow material is very promising to be used as a mass efficient and broadband microwave attenuation material. © 2014 American Chemical Society.

引用

页码：21911 / 21915

页数：5

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