The Mossbauer spectra of carbon nanotubes synthesize using ferrite catalyst

摘要：

The ferrite powder with honeycombed structure obtained by chemical combustion was used as catalyst to synthesize multi-walled carbon nanotubes by chemical vapor deposition. The magnetic components and characters of the the carbon nanotubes synthesized were investigated by X-ray diffraction (XRD), Mossbauer spectra and vibrating-sample magnetometer (VSM). The ferric components of the carbon nanotubes samples can be identified by Mossbauer spectra. The Mossbauer spectra of carbon nanotubes sample after purification contains two ferromagnetic sextet components corresponding to α -Fe species and Fe3C (cementite) species. While the Mossbauer spectra of the carbon nanotubes sample before purification contains three ferromagnetic sextet components corresponding to α -Fe species, Fe3C species and γ -Fe2O3. The saturation magnetization intensity Ms of carbon nanotubes sample after purification is decreased from 46.61 to 2.94 emu/g, but the coercive force increasd and reached 328Oe.

关键词： multi-walled carbon nanotubes Mossbauer spectra ferrite powder

作者: Haiyan Zhang Jiapeng Lin Zuxiong Peng Guoxun Zeng Jinshan Pang Yiming Chen

作者单位: Faculty of Material and Energy,Guangdong University of Technology,Guangzhou 510006,China

会议类型: 国际会议

会议名称: The 8th China International Nanoscience and Technology Symposium(2009第八届中国国际纳米科技湘潭研讨会Cinsts09)

会议地点: 湖南湘潭

会议语种:英文

页码: 1-7

在线出版日期: 2009-10-23（万方平台首次上网日期，不代表论文的发表时间）