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学科主题: 物理化学
题名: Preparation and size-dependent magnetism of highly dispersed iron silicide nanoparticles on silica
作者: Guan, Jingchao1;  Chen, Xiao1;  Yang, Kaixuan1;  Rykov, Alexandre2;  Wang, Junhu2;  Liang, Changhai1
通讯作者: ChanghaiLiang
刊名: JOURNAL OF MATERIALS CHEMISTRY C
发表日期: 2014-07-21
DOI: 10.1039/c4tc00676c
卷: 2, 期:27, 页:5292-5298
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Technology ;  Physical Sciences
类目[WOS]: Materials Science, Multidisciplinary ;  Physics, Applied
研究领域[WOS]: Materials Science ;  Physics
英文摘要: Fe3Si nanoparticles with a size of about 6-9 nm well dispersed on silica have been prepared by pyrolysis of ferrocene-polydimethylsilane composites at 600 degrees C. Powder XRD patterns, TEM and HRTEM images, and XPS spectra revealed that the average particle size increased with increasing pyrolysis temperature and a new phase, Fe5Si3, appeared when the pyrolysis temperature was above 800 degrees C. Fe-57 Mossbauer spectra, M - H curves and FC and ZFC curves demonstrated that the as-prepared nanoparticles presented superparamagnetic behavior at 27 degrees C and ferromagnetic behavior at -268 degrees C, and their particle sizes had a great impact on their magnetic properties. The Fe3Si nanoparticles on silica may find applications in magnetically recording materials, magnetically separable catalysts and electrode materials for spintronic devices.
关键词[WOS]: THIN-FILMS ;  FE3SI ;  PARTICLES ;  NANOWIRES ;  FE5SI3 ;  INTERMETALLICS ;  TEMPERATURE ;  DEPOSITION ;  PYROLYSIS ;  TRANSPORT
语种: 英语
WOS记录号: WOS:000338601800006
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/144326
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Dalian Univ Technol, Sch Chem Engn, Lab Adv Mat & Catalyt Engn, Dalian 116024, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Mossbauer Effect Data Ctr, Dalian 116024, Peoples R China

Recommended Citation:
Guan, Jingchao,Chen, Xiao,Yang, Kaixuan,et al. Preparation and size-dependent magnetism of highly dispersed iron silicide nanoparticles on silica[J]. JOURNAL OF MATERIALS CHEMISTRY C,2014,2(27):5292-5298.
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