| Strong microwave absorption of Fe@SiO2 nanocapsules fabricated by one-step high energy plasma | |
| Javid, Muhammad1; Zhou, Yuanliang1; Wang, Dongxing1; Liang, Jingshuang1; Li, Da2; Shi, Guimei3; Shah, Asif1; Zhou, Lei1; Zhang, Xuefeng4; Dong, Xinglong1; Zhang, Zhidong2 | |
| Corresponding Author | Dong, Xinglong(dongxl@dlut.edu.cn) ; Zhang, Zhidong(zdzhang@imr.ac.cn) |
| 2019-06-01 | |
| Source Publication | JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
 |
| ISSN | 0022-3697 |
| Volume | 129Pages:242-251 |
| Abstract | Herein, the spherical Fe@SiO2 nanocapsules (NCs) has been synthesized by a one-step way of DC arc-discharge plasma under a mixture atmosphere of H-2 and Ar. The high energy states of excited ions (Ar, H, Fe, Si) within plasma region are in situ recorded by online optical emission spectroscopy (OES) and become visible evidence for the energy conditions in the fabrication of Fe@SiO2 NCs. It indicates that the evaluated electron temperature of plasma reaches up to 3 x 10(4) K (similar to 2.6 eV) and can significantly influence the characters of the final product of Fe@SiO2. Magnetic measurement reveals that Fe@SiO2 NCs is dominant ferromagnetism exhibiting partial transition into superparamagnetism at T-B = 160 K. Electromagnetic parameters (permittivity, permeability) in frequency range of 2-18 GHz show that an appropriate impedance matching has been established in Fe@SiO2/paraffin composite, which brings about excellent reflection loss (RL) of -6/.6 dB at 9.3 GHz with thickness of 2.81 mm, and a wide bandwidth from 6 to 18 GHz with RL <= - 10 dB. The significant impact of a SiO2 layer on the electromagnetic performances of Fe@SiO2 NCs has been emphasized here, with respect to behaviors of the counterpart, i.e. pure Fe nanoparticles (NPs). |
| Keyword | Fe@SiO2 NCs Fe NPs Arc-plasma Magnetic behavior Electromagnetic parameter Reflection loss |
| Funding Organization | National Natural Science Foundations of China |
| DOI | 10.1016/j.jpcs.2019.01.001 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundations of China[51331006] ; National Natural Science Foundations of China[51271044] ; National Natural Science Foundations of China[51171033] |
| WOS Research Area | Chemistry ; Physics |
| WOS Subject | Chemistry, Multidisciplinary ; Physics, Condensed Matter |
| WOS ID | WOS:000466250300030 |
| Publisher | PERGAMON-ELSEVIER SCIENCE LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/133229 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Dong, Xinglong; Zhang, Zhidong |
| Affiliation | 1.Dalian Univ Technol, Key Lab Mat Modificat Laser Ion & Elect Beams, Minist Educ, Sch Mat Sci & Engn, Dalian 116023, Peoples R China 2.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China 3.Shenyang Univ Technol, 111,Shenliao West Rd, Shenyang 110870, Liaoning, Peoples R China 4.Hangzhou Dianzi Univ, Innovat Ctr Adv Mat, Hangzhou 310012, Zhejiang, Peoples R China |
| Recommended Citation GB/T 7714 | Javid, Muhammad,Zhou, Yuanliang,Wang, Dongxing,et al. Strong microwave absorption of Fe@SiO2 nanocapsules fabricated by one-step high energy plasma[J]. JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS,2019,129:242-251. |
| APA | Javid, Muhammad.,Zhou, Yuanliang.,Wang, Dongxing.,Liang, Jingshuang.,Li, Da.,...&Zhang, Zhidong.(2019).Strong microwave absorption of Fe@SiO2 nanocapsules fabricated by one-step high energy plasma.JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS,129,242-251. |
| MLA | Javid, Muhammad,et al."Strong microwave absorption of Fe@SiO2 nanocapsules fabricated by one-step high energy plasma".JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS 129(2019):242-251. |
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