静电纺丝法制备的Co0.6Ni0.3Cu0.1Fe2O4和Co0.6Ni0.3Zn0.1Fe2O4纳米纤维的结构及磁性能*

doi:10.11896/j.issn.1005-023X.2017.022.007

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Abstract In this paper, the precursor of Co_0.6Ni_0.3Cu_0.1Fe₂O₄/PVP and Co_0.6Ni_0.3Zn_0.1Fe₂O₄/PVP nanofibers with uniform diameter and smooth surface were prepared by electrospinning technique. Then the Co_0.6Ni_0.3Cu_0.1Fe₂O₄/PVP and Co0.6Ni0.3Zn0.1-Fe2O4/PVP nanofibers were obtained via heat treatment at 500—900 ℃. The phase, morphology, structure and magnetic properties of the resultant Co_0.6Ni_0.3Cu_0.1Fe₂O₄ and Co_0.6Ni_0.3Zn_0.1Fe₂O₄ nanofibers were characterized by TG-DSC, XRD, SEM and VSM respectively. The results show that the pure phase and well crystallized Co_0.6Ni_0.3Cu_0.1Fe₂O₄ and Co_0.6Ni_0.3Zn_0.1Fe₂O₄nanofibers or staple fibers can be obtained after heat treatment in the air by heat treatment at 500—900 ℃. When the temperature is at 700 ℃, the diameter of Co_0.6Ni_0.3Cu_0.1Fe₂O₄ and Co_0.6Ni_0.3Zn_0.1Fe₂O₄ nanofibers with smooth surface is about 80 nm, and moreover, the Co_0.6Ni_0.3Cu_0.1Fe₂O₄ nanofibers retain a high remanence ratio (Mr/Ms) and a coercivity of 0.56 and 1 088.87 Oe respectively. At 500 ℃, 600 ℃, 700 ℃, 800 ℃, 900 ℃, Co_0.6Ni_0.3Zn_0.1Fe₂O₄ nanofibers exhibit the intensities of saturation magnetization which are 14.5%, 7%, 16%, 10.7%, 8% higher than those of Co_0.6Ni_0.3Cu_0.1Fe₂O₄ nanofibers respectively, as well as the coercive forces which are 38%, 51%, 50%, 46%, 46.7% lower than Co_0.6Ni_0.3Cu_0.1Fe₂O₄ nanofibers respectively. The differences of saturation magnetization and coercivity of the two nanofibers provide a good reference for electromagnetic applications of CoNi ferrite.

Key words： electrospinning nanofibers coercive force magnetic property

Published: Online: 2018-05-08

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	Articles by authors
	DAI Jianfeng
	TIAN Xiguang
	YAN Xingshan
	LI Weixue
	WANG Qing

Cite this article:

DAI Jianfeng,TIAN Xiguang,YAN Xingshan, et al. Structure and Magnetic Properties of Electrospun Co_0.6Ni_0.3Zn_0.1Fe₂O₄ and Co_0.6Ni_0.3Cu_0.1Fe₂O₄ Nanofibers[J]. Materials Reports, 2017, 31(22): 30-34.

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https://www.mater-rep.com/EN/10.11896/j.issn.1005-023X.2017.022.007 OR https://www.mater-rep.com/EN/Y2017/V31/I22/30

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