Preparation and properties of SrFe12O19/ZnFe 2O4 core/shell nano-powder microwave absorber

doi:10.1080/10584587.2014.901882

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	Preparation and properties of SrFe12O19/ZnFe 2O4 core/shell nano-powder microwave absorber
	Feng, Wangjun 1,2; Liu, Huiling 2; Hui, Pengfei 2; Yang, Hua 2; Li, Jing 2; Wang, Jing Sheng 2
刊名	Integrated Ferroelectrics
	2014-03-24
卷号	152 期号:1 页码:120-126
关键词	Chemical analysis Electric network analyzers Molar ratio Nanostructured materials Particle size Particle size analysis Saturation magnetization Shells (structures) Sol-gels Strontium compounds Structural properties Zinc compounds Absorbing properties Calcined temperature Chemical component Core shell structure Microwave absorbers Nano powders Remanent magnetization Vector network analyzers
ISSN号	10584587
DOI	10.1080/10584587.2014.901882
英文摘要	The nano-powder microwave absorber SrFe12O19/ ZnFe2O4 with core-shell structure were prepared by two-step citrate sol-gel, with analytically pure Fe(NO3)3, Sr(NO3)2 and Zn(NO3)2 as the main materials. The XRD, TEM, VSM and vector network analyzer were used to analyze the chemical component, structure, morphology and magnetic property of the nano-powder. The results show that when the molar ratio of and SrFe 12O19 to ZnFe2O4 is 1:2 and calcined temperature is 850°C, the composite powder has obvious core-shell structure and the particles are scattered homogeneously in ellipsoidal shapes or bar shapes, the particle size of the nano-powder ranges from 35 nm to 45 nm; The saturation magnetization and remanent magnetization of the composite are larger than that of the soft phase, but smaller than that of the hard due to the exchange coupling between the hard and soft phases, the coercivity larger than that of the SrFe12O19, The maximum reflection loss reaches to -35.3 dB at 17.5 GHz when matching thickness of 2 mm, with excellent absorbing properties.© Taylor & Francis Group, LLC.
WOS研究方向	Engineering ; Physics
语种	英语
出版者	Taylor and Francis Ltd.
WOS记录号	WOS:000335947300016
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/112936]
专题	理学院
作者单位	1.State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metal, Lanzhou University of Technology, Lanzhou 730050, China; 2.School of Science, Lanzhou University of Technology, Lanzhou 730050, China
推荐引用方式 GB/T 7714	Feng, Wangjun,Liu, Huiling,Hui, Pengfei,et al. Preparation and properties of SrFe12O19/ZnFe 2O4 core/shell nano-powder microwave absorber[J]. Integrated Ferroelectrics,2014,152(1):120-126.
APA	Feng, Wangjun,Liu, Huiling,Hui, Pengfei,Yang, Hua,Li, Jing,&Wang, Jing Sheng.(2014).Preparation and properties of SrFe12O19/ZnFe 2O4 core/shell nano-powder microwave absorber.Integrated Ferroelectrics,152(1),120-126.
MLA	Feng, Wangjun,et al."Preparation and properties of SrFe12O19/ZnFe 2O4 core/shell nano-powder microwave absorber".Integrated Ferroelectrics 152.1(2014):120-126.