Enhanced microwave magnetic and attenuation properties of composites with free-standing spinel ferrite thick films as fillers

被引：15

作者：

Yang, Z. H. ^{[1
]}

Li, Z. W. ^{[1
]}

Liu, L. ^{[1
]}

Kong, L. B. ^{[1
]}

机构：

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

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2012年 / 324卷 / 19期

关键词：

Spinel ferrite; Thick film; Complex permeability; Complex permittivity; EM wave attenuation material; Bandwidth; PERMEABILITY; ABSORBER; DESIGN;

D O I：

10.1016/j.jmmm.2012.05.023

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Free-standing thick films of spinel ferrite, Ni0.89-xCu0.11ZnxFe2O4 with x=0.55 and 0.60, were prepared as fillers to fabricate electromagnetic composites. Compared to those made with conventional spherical fillers, the composites made with thick film fillers showed enhanced static permeability (mu(o)') and maximum imaginary permeability (mu(max)''). At the same time, complex permittivity (epsilon' and epsilon '') were almost unchanged. A relative bandwidth W-R of 7-8 was achieved, which is about 75% of the theoretical maximum relative bandwidth. These composites are potential candidates as electromagnetic attenuation materials with ultrabroad absorption bandwidth in L and S bands. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：3144 / 3148

页数：5

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