Phase transition and magnetic properties of Mg-doped hexagonal close-packed Ni nanoparticles

	Phase transition and magnetic properties of Mg-doped hexagonal close-packed Ni nanoparticles
其他题名	论文其他题名
	Yang J. H.; Feng B.; Liu Y.; Zhang Y. J.; Yang L. L.; Wang Y. X.; Wei M. B.; Lang J. H.; Wang D. D.; Liu X. Y.
	2008
发表期刊	Applied Surface Science
ISSN	0169-4332
卷号	254 期号:22 页码:7155-7158
摘要	Mg-doped Ni nanoparticles with the hexagonal close-packed (hcp) and face-centered cubic (fcc) structure have been synthesized by sol-gel method sintered at different temperatures in argon atmosphere. The sintering temperature played an important role in the control of the crystalline phase and the particle size. The pure hcp Mg-doped Ni nanoparticles with average particle size of 6.0 nm were obtained at 320 degrees C. The results indicated that the transition from the hcp to the fcc phase occurred in the temperature range between 320 degrees C and 450 degrees C. Moreover, the VSM results showed that the hcp Mg-doped Ni nanoparticles had unique ferromagnetic and superparamagnetic behavior. The unsaturation even at 5000 Oe is one of the superparamagnetic characteristics due to the small particle size. From the ZFC and FC curves, the blocking temperature TB of the hcp sample (6.0 nm) was estimated to be 10 K. The blocking temperature was related to the size of the magnetic particles and the magnetocrystalline anisotropy constant. By theoretical calculation, the deduced particle size was 6.59 nm for hcp Mg-doped Ni nanoparticles which was in agreement with the results of XRD and TEM. (C) 2008 Elsevier B.V. All rights reserved.
收录类别	SCI ; EI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/26438
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Yang J. H.,Feng B.,Liu Y.,et al. Phase transition and magnetic properties of Mg-doped hexagonal close-packed Ni nanoparticles[J]. Applied Surface Science,2008,254(22):7155-7158.
APA	Yang J. H..,Feng B..,Liu Y..,Zhang Y. J..,Yang L. L..,...&Liu X. Y..(2008).Phase transition and magnetic properties of Mg-doped hexagonal close-packed Ni nanoparticles.Applied Surface Science,254(22),7155-7158.
MLA	Yang J. H.,et al."Phase transition and magnetic properties of Mg-doped hexagonal close-packed Ni nanoparticles".Applied Surface Science 254.22(2008):7155-7158.

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