Gadolinium silicide (Gd5Si4) nanoparticles for tuneable broad band microwave absorption

被引：12
作者：
Bora, Pritom J. [1 ]
Harsta, S. M. [2 ]
Gupta, S. [3 ]
Pecharsky, V. K. [3 ,4 ]
Vinoy, K. J. [5 ]
Ramamurthy, Praveen C. [1 ,6 ]
Hadimani, R. L. [2 ,7 ]
机构：
[1] Indian Inst Sci, ICER, Bengaluru, India
[2] Virginia Commonwealth Univ, Dept Mech & Nucl Engn, Richmond, VA 23284 USA
[3] US DOE, Ames Lab, Div Mat Sci & Engn, Washington, DC 20585 USA
[4] Iowa State Univ, Dept Mat Sci & Engn, Ames, IA USA
[5] Indian Inst Sci, Dept Elect & Commun Engn, Bengaluru, India
[6] Indian Inst Sci, Dept Mat Engn, Bengaluru, India
[7] Iowa State Univ, Dept Elect & Comp Engn, Ames, IA 50011 USA
来源：
MATERIALS RESEARCH EXPRESS | 2019年 / 6卷 / 05期
基金：
美国国家科学基金会;
关键词：
nanoparticles; gadolinium silicide; reflection loss; dielectrics; ELECTROMAGNETIC ABSORPTION; ABSORBING PROPERTIES; FACILE SYNTHESIS; COMPOSITES; GRAPHENE; NANOCOMPOSITES; PROPERTY;
D O I：
10.1088/2053-1591/aafd55
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Soft magnetic Gd5Si4 nanoparticles exhibit excellent microwave absorption in the Ku-band (12.4-18 GHz) when dispersed in poly (dimethyl siloxane), PDMS. The minimum experimentally recorded reflection loss (RL) of Gd5Si4-PDMS nanocomposite is -69 dB, with a large bandwidth for a single 6 mm-thick layer. The bandwidth can be further extended by using a novel design where 1 mm-thick layers of the nanocomposite are arranged into a modified pyramid-shaped absorber. Standard electromagnetic (EM) simulations confirm experimental results.
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收藏
页数：11
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