Synthesis and characterization of SrFe12O19/CoFe2O4 nanocomposites with core-shell structure
Synthesis and characterization of SrFe12O19/CoFe2O4 nanocomposites with core-shell structure
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DOI：
10.1016/j.jallcom.2008.01.152
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发表时间：
2009-02
影响因子：
6.2
通讯作者：
Liu-yang Zhang;Zuo-wei Li
中科院分区：
文献类型：
--
作者：
Liu-yang Zhang;Zuo-wei Li
SrFe{sub 12}O{sub 19}/CoFe{sub 2}O{sub 4} nanocomposites with core-shell structure were successfully synthesized with two-step coprecipitation method. The samples were characterized by X-ray diffraction (XRD), transmission electron microscope (TEM), Raman spectroscopy, vibrating sample magnetometer (VSM) and radar absorbing material reflectivity far field radar cross-section method, respectively. XRD and TEM results show that CoFe{sub 2}O{sub 4} shell is obtained on the surface of SrFe{sub 12}O{sub 19}. And Raman spectra confirm the core-shell structure of the nanocomposites. The magnetic properties and microwave absorption analyses reveal that there are interphase interactions at the interface of SrFe{sub 12}O{sub 19} and CoFe{sub 2}O{sub 4}, which can affect the magnetic properties and microwave absorption properties of the samples. Compared with core material, the coercivity and saturation magnetization of core-shell nanocomposites decrease obviously, but the microwave absorption properties of nanocomposites are improved greatly.
SrFe{sub 12}O{sub 19}/CoFe{sub 2}O{sub 4} nanocomposites with core-shell structure were successfully synthesized with two-step coprecipitation method. The samples were characterized by X-ray diffraction (XRD), transmission electron microscope (TEM), Raman spectroscopy, vibrating sample magnetometer (VSM) and radar absorbing material reflectivity far field radar cross-section method, respectively. XRD and TEM results show that CoFe{sub 2}O{sub 4} shell is obtained on the surface of SrFe{sub 12}O{sub 19}. And Raman spectra confirm the core-shell structure of the nanocomposites. The magnetic properties and microwave absorption analyses reveal that there are interphase interactions at the interface of SrFe{sub 12}O{sub 19} and CoFe{sub 2}O{sub 4}, which can affect the magnetic properties and microwave absorption properties of the samples. Compared with core material, the coercivity and saturation magnetization of core-shell nanocomposites decrease obviously, but the microwave absorption properties of nanocomposites are improved greatly.