Catalytic synthesis and enhanced Curie temperature of epsilon-Fe3N@C nanostructure synthesized in a tetraethylenepentamine solution

doi:10.1016/j.jmmm.2018.06.063

CORC > 金属研究所 > 中国科学院金属研究所

	Catalytic synthesis and enhanced Curie temperature of epsilon-Fe3N@C nanostructure synthesized in a tetraethylenepentamine solution
	Li, Y ; Pan, DS ; Li, D ; Feng, Y ; Choi, CJ ; Liu, W ; Zhang, ZD
刊名	JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
	2018-11-01
卷号	465 页码:736-742
关键词	epsilon-Fe3N Core-shell structure Low-temperature nitriding Magnetic properties
ISSN号	0304-8853
DOI	10.1016/j.jmmm.2018.06.063
英文摘要	epsilon-Fe3N@C nanocrystals without oxidation are one-pot synthesized by using the iron(II) acetylacetonate and tetraethylenepentamine (TEPA) as Fe and N precursors under a low temperature (533 K) in the presence of a small quantity of Pt atoms as the co-catalyst. The epsilon-Fe3N@C nanoparticles with a core-shell structure are nearly spherical and have a wide particle size distribution of 100-500 nm in diameter. Fe nanoparticles obtained by reduction of Fe2+ with TEPA are an effective catalyzer for decomposing TEPA to produce N and C atoms at a temperature much lower than the boiling point of TEPA. The diffusion of N atoms into Fe nanoparticles for the formation of epsilon-Fe3N@C is proposed, based on the results obtained by kinetically controlling the synthetic temperature and surfactants. The epsilon-Fe3N@C nanoparticles have an excellent saturation magnetization of 135.5 emu/g at room temperature. A significantly enhanced Curie temperature (TC) of 614 K is reached in the present epsilon-Fe3N@C nanoparticles, which is much higher than the TC values in the previously reported epsilon-Fe3Nx.
学科主题	Materials Science, Multidisciplinary ; Physics, Condensed Matter
语种	英语
WOS记录号	WOS:000446439300104
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/79857]
专题	金属研究所_中国科学院金属研究所
作者单位	1.Univ Sci & Technol China, Sch Mat Sci & Engn, CAS, IMR,Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China 2.Choi, C. J.] Korea Inst Mat Sci, 797 Changwondaero, Chang Won 51508, Gyeongnam, South Korea
推荐引用方式 GB/T 7714	Li, Y,Pan, DS,Li, D,et al. Catalytic synthesis and enhanced Curie temperature of epsilon-Fe3N@C nanostructure synthesized in a tetraethylenepentamine solution[J]. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS,2018,465:736-742.
APA	Li, Y.,Pan, DS.,Li, D.,Feng, Y.,Choi, CJ.,...&Zhang, ZD.(2018).Catalytic synthesis and enhanced Curie temperature of epsilon-Fe3N@C nanostructure synthesized in a tetraethylenepentamine solution.JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS,465,736-742.
MLA	Li, Y,et al."Catalytic synthesis and enhanced Curie temperature of epsilon-Fe3N@C nanostructure synthesized in a tetraethylenepentamine solution".JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS 465(2018):736-742.