Fabrication and temperature dependent magnetic properties of Co-Ni nanotube arrays

doi:10.1016/j.physe.2019.02.004

	Fabrication and temperature dependent magnetic properties of Co-Ni nanotube arrays
	Chen, Yonghui 2; Maaz, Khan 1; Lyu, Shuangbao 2; Cheng, Yaxiong 2,3; Liu, Jie2
刊名	PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
	2019-06-01
卷号	110 页码:123-126
关键词	Co-Ni nanotubes Electrodeposition Polycarbonate template Bloch's law Saturation magnetization
ISSN号	1386-9477
DOI	10.1016/j.physe.2019.02.004
通讯作者	Chen, Yonghui(yhchen@impcas.ac.cn)
英文摘要	Parallel arrays of Co-Ni nanotubes with external diameter of 150 nm, wall thickness of 20 nm, and length of about 0.8 mu m were successfully fabricated in ion-track etched polycarbonate (PC) templates by electrochemical deposition. The morphology and composition of the nanotubes were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM) and energy dispersive X-ray spectroscopy (EDS). Temperature dependent magnetic analyses were performed with superconducting quantum interference device (SQUID) magnetometer which indicate that saturation magnetization of the nanotubes follows modified Bloch's law in the range 80-300 K. An abrupt deviation of the experimental curve (increase in magnetization) was observed from the modified Bloch's law below 80 K, which can be attributed to the disordered surface spins in the nanotubes due to the finite size effects. Finally, it was found that coercivity measured at different temperatures follows Kneller's law within the premises of Stoner-Wohlfarth model for ferromagnetic nanostructures.
资助项目	National Natural Science Foundation of China[11375241] ; National Natural Science Foundation of China[11175221] ; National Natural Science Foundation of China[11005134] ; National Natural Science Foundation of China[11275237] ; West Light Foundation of Chinese Academy of Sciences (CAS)
WOS关键词	SURFACE SPIN DISORDER ; SIZE ; NANOPARTICLES ; ELECTRODEPOSITION ; ALLOYS
WOS研究方向	Science & Technology - Other Topics ; Physics
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000460542000020
资助机构	National Natural Science Foundation of China ; West Light Foundation of Chinese Academy of Sciences (CAS)
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/134672]
专题	中国科学院近代物理研究所
通讯作者	Chen, Yonghui
作者单位	1.PINSTECH, Phys Div, Nanomat Res Grp, Islamabad 45650, Pakistan 2.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China 3.Lanzhou Univ, Sch Phys Sci & Technol, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Chen, Yonghui,Maaz, Khan,Lyu, Shuangbao,et al. Fabrication and temperature dependent magnetic properties of Co-Ni nanotube arrays[J]. PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES,2019,110:123-126.
APA	Chen, Yonghui,Maaz, Khan,Lyu, Shuangbao,Cheng, Yaxiong,&Liu, Jie.(2019).Fabrication and temperature dependent magnetic properties of Co-Ni nanotube arrays.PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES,110,123-126.
MLA	Chen, Yonghui,et al."Fabrication and temperature dependent magnetic properties of Co-Ni nanotube arrays".PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES 110(2019):123-126.