Preparation and microwave absorption mechanisms of the NiZn ferrite nanofibers

被引：259

作者：

Huang, Xiaogu ^{[1
]}

Zhang, Jing ^{[2
]}

Lai, Min ^{[1
]}

Sang, Tianyi ^{[3
]}

机构：

[1] Nanjing Univ Informat Sci & Technol, Sch Phys & Optoelect Engn, Nanjing 210044, Jiangsu, Peoples R China

[2] China Geol Survey, Nanjing Ctr, Nanjing 210016, Jiangsu, Peoples R China

[3] Univ Calif Davis, Dept Elect & Comp Engn, Davis, CA 95616 USA

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2015年 / 627卷

基金：

中国国家自然科学基金;

关键词：

Spinel ferrite; Microwave absorber; Electromagnetic property; Reflection loss; Microwave absorption mechanism; ABSORBING PROPERTIES; MAGNETIC-PROPERTIES; ELECTROMAGNETIC PROPERTIES; WAVE ABSORBER; COMPOSITE; MICROSPHERES; PERFORMANCE; LIGHTWEIGHT; DESIGN; CORES;

D O I：

10.1016/j.jallcom.2014.11.235

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this paper, the NixZn(1-x)Fe2O4 (x = 0.2, 0.4, 0.5, 0.6, 0.8) ferrite nanofibers were synthesized by electrospinning method. The microstructure, electromagnetic properties and microwave absorption mechanisms were analyzed (in detail). The results indicated that the nanofiber diameter, the saturation magnetization, the coercivity and the electromagnetic properties could be optimized by tuning the Ni2+ content. The Ni0.5Zn0.5Fe2O4 ferrite nanofiber finally performed the excellent microwave absorption properties. The reflection loss was less than -10 dB in the whole X-band frequencies. The analysis of microwave absorption mechanism indicated that the microwave absorption bandwidth was mainly depended on the input impedance matching, the enhanced electromagnetic loss properties ensured that the entering wave could be mostly absorbed, and the frequency appearing the reflection loss peak was determined by the absorber thickness. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：367 / 373

页数：7

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