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无机材料学报

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2009 , Vol. 24 >Issue 3: 599 - 601

DOI: https://doi.org/10.3724/sp.j.1077.2009.00599

研究论文

六角钡铁氧体准单晶块材制备及其磁性能研究

  • 刘俊亮 ,
  • 郭翠静 ,
  • 张 伟 ,
  • 曾燕伟
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  • 南京工业大学 材料科学与工程学院， 南京 210009

收稿日期: 2008-09-18

  修回日期: 2008-11-24

  网络出版日期: 2009-05-20

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Fabrication of Ba-Hexaferrite Quasi-single Crystals and their Magnetic Properties

  • LIU Jun-Liang ,
  • GUO Cui-Jing ,
  • ZHANG Wei ,
  • ZENG Yan-Wei
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  • School of Materials Science and Engineering, Nanjing University of Technology, Nanjing 210009,China

Received date: 2008-09-18

  Revised date: 2008-11-24

  Online published: 2009-05-20

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摘要

具有高磁晶各向异性场的六角钡铁氧体（BaFe12O19, BaM）是毫米波器件中关键的旋磁材料.以片状纳米尺度六角钡铁氧体单畴颗粒为原料粉体，通过强磁场颗粒取向、加压成型、等静压处理以及微液相参与烧结等过程，成功制备得到了晶粒沿c轴取向度达99％的六角钡铁氧体准单晶材料，其磁性接近单晶铁酸钡，饱和磁化强度达到4654kA/m，矫顽场约为9.552kA/m，并对其织构化和致密化机理进行了分析与讨论.

关键词： 六角钡铁氧体; 旋磁铁氧体; 准单晶结构; 液相参与烧结

本文引用格式

刘俊亮 , 郭翠静 , 张 伟 , 曾燕伟 . 六角钡铁氧体准单晶块材制备及其磁性能研究[J]. 无机材料学报, 2009 , 24(3) : 599 -601 . DOI: 10.3724/sp.j.1077.2009.00599

Abstract

Barium hexaferrite (BaFe12O19, BaM) with large uniaxial magnetocrystalline anisotropy is a key gyromagnetic material for the millimeter wave device. BaM quasi-single crystal materials with a grain orientation degree(GOD) of 99% were successfully fabricated by using nanosized single-domain BaM crystallites as the starting materials via press-forming in magnetic filed and sintering with minor liquid participation. The as-fabricated BaM quasi-single crystals were characterized with the saturation magnetization of 4654kA/m, the coercity field of 9.552kA/m and their formation mechanism was also discussed.

Key words： Ba-hexaferrite; gyromagnetic ferrites; quasi-single crystal structure; liquid participation sintering

参考文献

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