• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Nanotechnology >Synthesis of FeNi_3/(Ni_(0.5)Zn_(0.5))Fe_2O_4 nanocomposite and its high frequency complex permeability
【24h】

Synthesis of FeNi_3/(Ni_(0.5)Zn_(0.5))Fe_2O_4 nanocomposite and its high frequency complex permeability

机译：FeNi_3 /（Ni_（0.5）Zn_（0.5））Fe_2O_4纳米复合材料的合成及其高频复磁导率

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

FeNi_3/(Ni_(0.5)Zn_(0.5))Fe_2O_4 nanocomposite particles were successfully synthesized using the hydrazine reduction combined with ammonia co-precipitation ferrite coating method. The x-ray and transmission electron microscopy analysis showed that face-centred cubic-structured FeNi_3 nanoparticles were coated with spinel Ni-Zn ferrite. The composite particles were nearly spherical with diameters of about 80-200 nm and exhibited typical soft magnetic properties. The saturation magnetization (M_s) of the composite was greatly improved, compared with that of traditional ferrite. With increasing ferrite content, the eddy-current loss was effectively suppressed and a notable high frequency characteristic, in which the real part mu' of the permeability was almost independent of the frequency, was observed. The imaginary part mu'' remained at an extremely low value below the frequency of 300 MHz. The cut-off frequency f_r was estimated to be above 1 GHz. The highest value of mu' reached 13 when the ratio of FeNi_3 to Ni_(0.5)Zn_(0.5)Fe_2O_4 was 1:1. Two peaks were observed in the permeability spectra, which may be ascribed to the ferromagnetic resonances of FeNi_3 and Ni-Zn ferrite respectively.
机译：采用肼还原-氨共沉淀铁氧体包覆法成功合成了FeNi_3 /（Ni_（0.5）Zn_（0.5））Fe_2O_4纳米复合粒子。 X射线和透射电子显微镜分析表明，以尖晶石形的Ni-Zn铁氧体包覆了面心立方结构的FeNi_3纳米颗粒。该复合颗粒几乎是球形的，直径约为80-200nm，并表现出典型的软磁性能。与传统铁氧体相比，复合材料的饱和磁化强度（M_s）大大提高。随着铁素体含量的增加，涡流损耗得到有效抑制，并且观察到显着的高频特性，其中磁导率的实部mu'几乎与频率无关。虚部mu''在低于300 MHz的频率下保持极低的值。截止频率f_r估计高于1 GHz。当FeNi_3与Ni_（0.5）Zn_（0.5）Fe_2O_4的比例为1：1时，mu'的最大值达到13。在磁导率谱中观察到两个峰，这可能分别归因于FeNi_3和Ni-Zn铁氧体的铁磁共振。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号