High-frequency magnetic properties at K and Ka bands for barium-ferrite/silicone composites

被引：14
|
作者：
Li, Z. W. [1 ]
Yang, Z. H. [1 ]
Kong, L. B. [1 ]
Zhang, Y. J. [2 ]
机构：
[1] Natl Univ Singapore, Temasek Labs, Singapore 117411, Singapore
[2] DSO Natl Labs, Singapore 118230, Singapore
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2013年 / 325卷
关键词：
Superhigh-frequency magnetic property; Complex permeability; The relationship between dynamic and static magnetic property; ABSORBER;
D O I：
10.1016/j.jmmm.2012.07.040
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
High-frequency magnetic properties at K and Ka bands (18-40 GHz) have been studied for M-type barium ferrite BaMnxTixFe12-2xO19 (x=0.4-1.0) composites. The results show that complex permeability of the composites has a resonancelike-type dispersion. Although (mu'(0)-1) is rather small (about 0.2), mu ''(max) achieves 0.53-0.78, due to small effective damping coefficient. The composites also exhibit relatively high resonance frequencies f(R) covering 20-33 GHz, which are proportional to anisotropy fields Ha of the barium ferrites. These properties will be beneficial to the design of electromagnetic composites at a desired working frequency. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：82 / 86
页数：5
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