...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >Direct synthesis of L1_0 FePt nanoparticles within carbon nanotubes by wet chemical procedure
【24h】

Direct synthesis of L1_0 FePt nanoparticles within carbon nanotubes by wet chemical procedure

机译：湿化学法直接合成碳纳米管内的L1_0 FePt纳米粒子

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

This paper reports on the low temperature synthesis of L1_0 iron-platinum (FePt) particles within multiwall carbon nanotubes using a novel wet chemical method that allows the filling of the nanotube cavity keeping clean its external wall. In the proposed procedure, nanotubes are filled with a precursor salt of hexaaquairon(II) hexachloroplatinate, ([Fe(H _2O)_6][PtCl_6]) and nanoparticles of the magnetically hard phase are directly obtained by heating at 400 °C in a reductive atmosphere. The advantage of such a precursor, allowing one to obtain at low temperature the L1_0 phase without passing through the soft fcc phase, is due to its structure, where the Fe and Pt atoms are arranged in alternating planes, as in the fct FePt structure. Morphological, structural and magnetic properties of the filled nanotubes have been investigated by transmission electron microscopy, x-ray diffraction and magnetization measurements. The results show the coexistence of nanoparticles in the superparamagnetic and blocked state, depending on the temperature, due to the particle size distribution.
机译：本文报道了使用新型湿化学方法在多壁碳纳米管中低温合成L1_0铁-铂（FePt）颗粒的方法，该方法允许填充纳米管腔并保持其外壁清洁。在拟议的程序中，将六水合六水合铂（[Fe（H _2O）_6] [PtCl_6]）的前体盐填充在纳米管中，并通过在400°C的温度下加热直接获得磁性硬相的纳米颗粒。还原性气氛。这种前驱物的优点是，由于其结构，如fct FePt结构那样，Fe和Pt原子排列在交替的平面中，因此可以在低温下获得L1_0相而不通过软性fcc相。填充的纳米管的形态，结构和磁性已经通过透射电子显微镜，X射线衍射和磁化测量进行了研究。结果表明，由于粒径分布，取决于温度，纳米粒子以超顺磁性和封闭状态共存。

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