首页 | 本学科首页   官方微博 | 高级检索  
     

Sr1-xLaxFe12-xCoxO19铁氧体纳米颗粒的结构与磁性
引用本文:李锐,洪炜宁,孙学峰.Sr1-xLaxFe12-xCoxO19铁氧体纳米颗粒的结构与磁性[J].磁性材料及器件,2009,40(3):32-34,45.
作者姓名:李锐  洪炜宁  孙学峰
作者单位:1. 安徽农业大学,理学院,安徽合肥,230036
2. 合肥微尺度物质科学国家实验室,安徽合肥,230026
摘    要:利用溶胶-凝胶法制备出性能优良的Sr1-xLaxFe12-xCoxO19(x=0~0.5)铁氧体,研究了La、Co掺杂量对铁氧体结构和磁学性能的影响.XRD 结果显示,对x≤0.3样品均得到单一的M相,而x=0.4样品出现了CoFe2O4相,x=0.5样品出现了CoFe2O4相和LaFeO3相.VSM结果显示,在适当的代换量(x=0~0.2)范围,剩余磁感应强度增加,同时矫顽力也增加.x=0.2样品的Br、H-c和?s最大值分别为449mT、562.5 kA/m和68 Am2/kg,与未掺杂样品相比,La3+、Co2+的加入能明显提高样品的综合磁性能.

关 键 词:锶铁氧体  掺杂  相变  磁性能

Microstructure and Magnetic Properties of Sr_(1-x)La_xFe_(12-x)Co_xO_(19) Hexaferrite Nanoparticles
LI Rui,HONG Wei-ning,SUN Xue-feng.Microstructure and Magnetic Properties of Sr_(1-x)La_xFe_(12-x)Co_xO_(19) Hexaferrite Nanoparticles[J].Journal of Magnetic Materials and Devices,2009,40(3):32-34,45.
Authors:LI Rui  HONG Wei-ning  SUN Xue-feng
Affiliation:LI Rui1,HONG Wei-ning1,SUN Xue-feng2 1. School of Science,Anhui Agricultural University,Hefei 230036,China,2. Hefei National Laboratory for Physical Sciences at Microscale,Hefei 230026
Abstract:Sr1-xLaxFe12-xCoxO19(x=0~0.5) hexaferrite nanoparticles were prepared by chemical sol-gel route, and the dependence of microstructure and magnetic property on the substitution content was studied. XRD experimental results showned that the samples exhibit single hexagonal magnetoplumbite phase up to x=0.3, but CoFe2O4 phase appears at x=0.4, CoFe2O4 phase and LaFeO3 phase appears at x=0.5. At the same time, VSM experimental results showed that for an amount of substitution (x=0~0.2), both the residual magnet...
Keywords:strontium hexaferrite  substitution  phase transition  magnetic properties  
本文献已被 CNKI 维普 万方数据 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号