Preparation and Properties of Ce-doped Cobalt Ferrite

doi:10.11901/1005.3093.2017.611

Chinese Journal of Materials Research

2018, Vol. 32

Issue (6): 449-454 DOI: 10.11901/1005.3093.2017.611

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Preparation and Properties of Ce-doped Cobalt Ferrite

Hongxia JING^1,²(

), Mingxing GAO², Xingmei WANG², Wangjun PEI³, Weizhou JIAO¹

1 Shanxi Province Key Laboratory of Higee-Oriented Chemical Engineering, North University of China, Taiyuan 030051, China
2 Department of Chemistry, School of Science, North University of China, Taiyuan 030051, China
3 Branch Factory of Surface Treatment, Jinxi Industries Group, Taiyuan 030027, China

Cite this article:

Hongxia JING, Mingxing GAO, Xingmei WANG, Wangjun PEI, Weizhou JIAO. Preparation and Properties of Ce-doped Cobalt Ferrite. Chinese Journal of Materials Research, 2018, 32(6): 449-454.

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Abstract

Nanostructure of CoFe_2-_xCe_xO₄(x=0,0.1,0.2,0.3,0.4) was synthesized by sol-gel coupled with self-propagating method. The prepared nanostructures were characterized by means of XRD, EDS, FT-IR, SEM, TEM and PNA in terms of phase constituents, morphology and electromagnetic properties. Peculiarly, the influence of the amount of Ce³⁺ on absorbing properties was investigated. Results show that the prepared CoFe₂O₄ has spinel structure. The average diameter of particles is about 70 nm. The microwave absorption ability of the CoFe_2-_xCe_xO₄ is greatly improved in the frequency domain of 0~6 GHz, in comparison to the pure CoFe₂O₄. When the Ce³⁺content is 0.3 it has the best wave-absorbing property at 5030 MHz, of which the maximum absorption can reach -27.6 dB and within a bandwidth of 1.6 GHz, its absorption is above -5 dB.

Key words: inorganic nonmetallic materials cobalt ferrite wave-absorbing properties nanoparticles doping

Received: 17 October 2017

ZTFLH:

TB331

Fund: Supported by National Natural Science Foundation of China (Nos. 20871108 & 51272239) and Shanxi Province Key Laboratory of Higee-Oriented Chemical Engineering (No. CZL201502)

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	Hongxia JING
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https://www.cjmr.org/EN/10.11901/1005.3093.2017.611 OR https://www.cjmr.org/EN/Y2018/V32/I6/449

Fig.1 XRD patterns of diferent samples (a) CoFe₂O₄, (b) CoFe_1.7Ce_0.3O₄

Fig.2 EDS spectrum of different samples surface (a) CoFe₂O₄, (b) CoFe_1.7Ce_0.3O₄

Table 1 Element content analysis of different samples

Fig.3 Infrared spectra of different samples (a) CoFe₂O₄, (b) CoFe₂O₄xerogel

Fig.4 TEM patterns of different samples (a) CoFe_1.7Ce_0.3O₄, (b) CoFe₂O₄

Fig.5 Complex permeability versus frequency for the CoFe_2-_xCe_xO₄(x=0, 0.1, 0.2, 0.3, 0.4)

Fig.6 Complex permittivity versus frequency for the CoFe_2-_xCe_xO₄(x=0, 0.1, 0.2, 0.3, 0.4)

Fig.7 Absorbing curves of CoFe_2-_xCe_xO₄(x=0, 0.1, 0.2, 0.3, 0.4)

Table 2 Wave-absorbing properties parameters of the CoFe_2-_x-Ce_xO₄

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