Synthesis, magnetic and electromagnetic absorption properties of amorphous core-shell Fe-B@SiO2 submicrospheres

Xuan Zhong, Jing Wei Cheng, Ying Liu, Xiu Chen Zhao

科研成果: 书/报告/会议事项章节会议稿件同行评审

摘要

Amorphous core-shell Fe-B@SiO2 submicrospheres with the SiO2 shell layer of about 18 nm were fabricated via a two-step process. Fe-B submicrospheres were first obtained, and core-shell Fe-B@SiO2 submicrospheres were subsequently fabricated using TEOs as a Si source through a modified Stöber method. The measurements of the magnetic properties demonstrated that the amorphous core-shell Fe-B@SiO2 submicrospheres exhibit ferromagnetic behavior at room temperature. The maximum reflection loss reaches -24.8 dB at 11.76 GHz for the absorber with thickness of 2.2 mm. The absorption bandwidth with the reflection loss below -10 dB is up to 14.76 GHz for the absorber with a thickness of 1.5-6 mm and the absorption bandwidth with the reflection loss below -20 dB is up to 6.6 GHz for the absorber with a thickness of 1.8-3.1 mm. Our results demonstrates that the amorphous core-shell Fe-B@SiO2 submicrospheres obtained in this work are attractive candidate materials for the magnetic and EM wave absorption applications.

源语言英语
主期刊名Functional Materials Research II
编辑Linqing Luo, Guichun Huang
出版商Trans Tech Publications Ltd.
204-210
页数7
ISBN(印刷版)9783035710526
DOI
出版状态已出版 - 2017
活动China Functional Material Technology and Industry Forum, 2016 - Chongqing, 中国
期限: 25 7月 201628 7月 2016

出版系列

姓名Key Engineering Materials
727
ISSN(印刷版)1013-9826
ISSN(电子版)1662-9795

会议

会议China Functional Material Technology and Industry Forum, 2016
国家/地区中国
Chongqing
时期25/07/1628/07/16

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