Anisotropic Growth and Magnetic Properties of alpha ''-Fe16N2@C Nanocones

doi:10.3390/nano11040890

CORC > 金属研究所 > 中国科学院金属研究所

	Anisotropic Growth and Magnetic Properties of alpha ''-Fe16N2@C Nanocones
	Li, Yong 1; Kuang, Qifeng 1; Men, Xiaoling 1; Wang, Shenggang 1; Li, Da 1; Choi, Chuljin 2; Zhang, Zhidong 1
刊名	NANOMATERIALS
	2021-04-01
卷号	11 期号:4 页码:12
关键词	alpha ''-Fe16N2 permanent magnetic material one-dimensional nanocones core/shell structure anisotropic growth chemical solution method
DOI	10.3390/nano11040890
通讯作者	Li, Da(dali@imr.ac.cn) ; Choi, Chuljin(cjchoi@kims.re.kr)
英文摘要	alpha ''-Fe16N2 nanomaterials with a shape anisotropy for high coercivity performance are of interest in potential applications such as rare-earth-free permanent magnets, which are difficult to synthesize in situ anisotropic growth. Here, we develop a new and facile one-pot microemulsion method with Fe(CO)(5) as the iron source and tetraethylenepentamine (TEPA) as the N/C source at low synthesis temperatures to fabricate carbon-coated tetragonal alpha ''-Fe16N2 nanocones. Magnetocrystalline anisotropy energy is suggested as the driving force for the anisotropic growth of alpha ''-Fe16N2@C nanocones because the easy magnetization direction of tetragonal alpha ''-Fe16N2 nanocrystals is along the c axis. The alpha ''-Fe16N2@C nanocones agglomerate to form a fan-like microstructure, in which the thin ends of nanocones direct to its center, due to the magnetostatic energy. The lengths of alpha ''-Fe16N2@C nanocones are similar to 200 nm and the diameters vary from similar to 10 nm on one end to similar to 40 nm on the other end. Carbon shells with a thickness of 2-3 nm protect alpha ''-Fe16N2 nanocones from oxidation in air atmosphere. The alpha ''-Fe16N2@C nanocones synthesized at 433 K show a room-temperature saturation magnetization of 82.6 emu/g and a coercive force of 320 Oe.
资助项目	Future Materials Discovery Program through the National Research Foundation of Korea (NRF) - Ministry of Science and Technology and ICT[2016M3D1A1027835] ; National Natural Science Foundation of China[51971221] ; National Natural Science Foundation of China[52031014] ; National Key R&D Program of China from the ministry of Science and Technology of China[2017YFA0206302] ; National Key R&D Program of China from the ministry of Science and Technology of China[2017YFA0700702]
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
语种	英语
出版者	MDPI
WOS记录号	WOS:000643430400001
资助机构	Future Materials Discovery Program through the National Research Foundation of Korea (NRF) - Ministry of Science and Technology and ICT ; National Natural Science Foundation of China ; National Key R&D Program of China from the ministry of Science and Technology of China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/162450]
专题	金属研究所_中国科学院金属研究所
通讯作者	Li, Da; Choi, Chuljin
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China 2.Korea Inst Mat Sci, 797 Changwondaero, Chang Won 51508, Gyeongnam, South Korea
推荐引用方式 GB/T 7714	Li, Yong,Kuang, Qifeng,Men, Xiaoling,et al. Anisotropic Growth and Magnetic Properties of alpha ''-Fe16N2@C Nanocones[J]. NANOMATERIALS,2021,11(4):12.
APA	Li, Yong.,Kuang, Qifeng.,Men, Xiaoling.,Wang, Shenggang.,Li, Da.,...&Zhang, Zhidong.(2021).Anisotropic Growth and Magnetic Properties of alpha ''-Fe16N2@C Nanocones.NANOMATERIALS,11(4),12.
MLA	Li, Yong,et al."Anisotropic Growth and Magnetic Properties of alpha ''-Fe16N2@C Nanocones".NANOMATERIALS 11.4(2021):12.