Fabrication and low temperature magnetic studies of Ni-Co core-shell nanowires

doi:10.1016/j.jallcom.2015.12.028

	Fabrication and low temperature magnetic studies of Ni-Co core-shell nanowires
	Maaz, K.1,2; Duan, J. L.1; Karim, S.2; Chen, Y. H.1; Yao, H. J.1; Mo, D.1 ; Sun, Y. M.1; Liu, J.1
刊名	JOURNAL OF ALLOYS AND COMPOUNDS
	2016-03-25
卷号	662 页码:296-301
关键词	Electrochemical deposition Ion membranes Core-shell nanowires Ferromagnetism Magnetic anisotropy
ISSN号	0925-8388
DOI	10.1016/j.jallcom.2015.12.028
英文摘要	Core-shell magnetic nanowires of nickel and cobalt embedded in ion-track etched polycarbonate (PC) template were fabricated by two step etching and deposition technique. Structural investigations reveal the successful fabrication of 60 nm nickel core nanowires surrounded by similar to 20 nm concentric cobalt shell. X-ray diffraction and electron microscopy studies confirmed the presence of fcc nickel and hcp cobalt at the core and shell regions, respectively. Low temperature magnetic studies performed between 5 and 300 K indicate the ferromagnetic nature of the nanowires with coercivity and magnetization that are increasing with decreasing temperature of the nanowires. Temperature dependence of coercivity can be understood in term of thermal activation over the energy barrier with m-power dependence on the field, while the saturation magnetization was found to follow the modified Bloch's law at low temperatures. (C) 2015 Elsevier B.V. All rights reserved.
资助项目	Chinese Academy of Sciences (CAS) under the CAS President's International Fellowship Initiative (PIFI) programme ; National Natural Science Foundation of China[11175221] ; National Natural Science Foundation of China[11375241] ; National Natural Science Foundation of China[11179003]
WOS关键词	SELF-ASSEMBLED ARRAYS ; NANOTUBES ; NANOPARTICLES ; DIAMETER ; CARBON ; FIELD
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000368336200040
资助机构	Chinese Academy of Sciences (CAS) under the CAS President's International Fellowship Initiative (PIFI) programme ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/41465]
专题	中国科学院近代物理研究所
通讯作者	Maaz, K.
作者单位	1.Chinese Acad Sci, Inst Modern Phys, Mat Res Ctr, Lanzhou 730000, Peoples R China 2.PINSTECH, Div Phys, Nanomat Res Grp, Islamabad, Pakistan
推荐引用方式 GB/T 7714	Maaz, K.,Duan, J. L.,Karim, S.,et al. Fabrication and low temperature magnetic studies of Ni-Co core-shell nanowires[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2016,662:296-301.
APA	Maaz, K..,Duan, J. L..,Karim, S..,Chen, Y. H..,Yao, H. J..,...&Liu, J..(2016).Fabrication and low temperature magnetic studies of Ni-Co core-shell nanowires.JOURNAL OF ALLOYS AND COMPOUNDS,662,296-301.
MLA	Maaz, K.,et al."Fabrication and low temperature magnetic studies of Ni-Co core-shell nanowires".JOURNAL OF ALLOYS AND COMPOUNDS 662(2016):296-301.