Affiliation of Author(s):材料科学与技术学院
Journal:Trans. Nanjing Univ. Aero. Astro.
Abstract:Double perovskite oxide Sr2FeMoO6powder is prepared by a solid state reaction method. The microwave absorption properties of Sr2FeMoO6and paraffin wax composites are studied in the frequency range of 2-18 GHz at room temperature. The optimum absorption -36.7 dB is achieved at 17.7 GHz with a matching thickness of 5.0 mm, which indicates that Sr2FeMoO6/paraffin composites can be potential microwave absorbers in a relatively high frequency range. The excellent microwave absorption properties are attributed to the good electromagnetic match between dielectric loss and magnetic loss. The dielectric loss is considered to be caused by orientation polarization and interfacial polarization, while the magnetic loss is caused by natural resonance in the low frequency range, eddy current loss as well as exchange resonance in the high frequency range. © 2017, Editorial Department of Transactions of NUAA. All right reserved.
ISSN No.:1005-1120
Translation or Not:no
Date of Publication:2017-04-01
Co-author:chenjiankun,SHEN Yifu
Correspondence Author:FENG Xiaomei