کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5352974 | 1503683 | 2013 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis, magnetic and electromagnetic properties of Al2O3/Fe oxides composite-coated polyhedral Fe core-shell nanoparticles
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Synthesis, magnetic and electromagnetic properties of Al2O3/Fe oxides composite-coated polyhedral Fe core-shell nanoparticles Synthesis, magnetic and electromagnetic properties of Al2O3/Fe oxides composite-coated polyhedral Fe core-shell nanoparticles](/preview/png/5352974.png)
چکیده انگلیسی
Polyhedral Fe nanoparticles with amorphous Al2O3/FeOx composites shells are prepared by the arc discharge method, in which the shape of Fe nanoparticles includes quadrilateral, pentagon, hexagonal and sphere. Magnetic and electromagnetic (EM) properties of Fe nanoparticles have been investigated in detail. Reflection loss (RL) values exceeding â10Â dB are calculated in 7-18Â GHz for an absorber thickness of 1.6Â mm, and RL values exceed â5Â dB at 2-18Â GHz for any absorber thickness between 3.8 and 10Â mm. An optimal RL value of â38.46Â dB is observed at 6.2Â GHz with a matching thickness of 2.3Â mm. The excellent EM properties are ascribed to the dielectric resonance from the special core-shell microstructure and the broad and strong natural resonance from the shape anisotropy of Fe nanoparticles.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 280, 1 September 2013, Pages 132-137
Journal: Applied Surface Science - Volume 280, 1 September 2013, Pages 132-137
نویسندگان
Xianguo Liu, Yuping Sun, Chao Feng, Chuangui Jin, Weihuo Li,