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單分散Ni球制備及Ni/NiO的磁性研究
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O482.52

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安徽省教育廳重點(diǎn)項(xiàng)目(2005KJ033ZD)資助


Monodispersed Ni Sphere Observation and Ni/NiO Magnetic Properties
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    摘要:

    使用微波輔助Poly方法制備了直徑范圍在100nm~180nm單分散的Ni球,用磁力顯微鏡(MFM)測(cè)其磁結(jié)構(gòu)。進(jìn)一步對(duì)Ni球表面氧化獲得了高度球化的NicoreNiOshell結(jié)構(gòu),采用XRD,TEM,XPS和EDAX對(duì)其進(jìn)行了測(cè)量分析,并用VSM和SQUID進(jìn)一步討論了鐵磁/反鐵磁的界面耦合效應(yīng)。同時(shí),估算了磁性交換偏置耦合場(chǎng)與顆粒尺寸的關(guān)系。

    Abstract:

    Monodispersed nickel spheres with diameters ranging from 100 nm to 180 nm were prepared by microwave-assisted(MW)polyol method.The magnetic stripe domain structure in these nickel spheres was measured by magnetic force microscopy(MFM).Furthermore,in this work we reported the formation of core-shell structures of highly globular NicoreNiOshell which were synthesized from the Ni spheres,and the magnetic properties of the core-shell structures have been investigated.

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劉先松 周圣強(qiáng) 黃凱 Udi Meridor Aviad Frydman Aharon Gedanken.單分散Ni球制備及Ni/NiO的磁性研究[J].稀有金屬材料與工程,2006,35(9):1457~1460.[Liu Xiansong, Zhou Shengqiang, Huang Kai, Udi Meridor, Aviad Frydman, Aharon Gedanken. Monodispersed Ni Sphere Observation and Ni/NiO Magnetic Properties[J]. Rare Metal Materials and Engineering,2006,35(9):1457~1460.]
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  • 收稿日期:2005-08-04
  • 最后修改日期:2005-08-04
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