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纳米晶复合永磁铁氧体的双相交换耦合作用 被引量：1

Exchange-coupling Interaction in Nanostructured Two-phase Permanent Ferrites
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摘要 采用sol gel方法制备纳米晶复合SrFe12 O19/γ Fe2 O3 铁氧体.利用X射线衍射(XRD),透射电子显微镜(TEM)和振动样品(VSM)对纳米晶样品进行了研究.当焙烧温度介于 60 0～80 0℃,样品存在SrFe12 O19/γ Fe2 O3 复相.在同样条件下,压成薄片的样品呈现了硬磁与软磁(SrFe12 O19/γ Fe2 O3 )的纳米复合相的交换耦合作用.对SrFe12 O19/γ Fe2 O3 的纳米复合材料的各向同性磁能积的增加和磁性交换耦合作用机制进行了研究. Nanocomposite SrFe 12 O 19 / γ Fe 2O 3 permanent ferrites have been prepared by the sol gel method and their structure and magnetic properties have been analyzed by X ray diffraction (XRD), transmission electron microscope (TEM), and vibrating sample magnetometer (VSM). When thermal treatment temperature is below 800℃, the samples pressed into a flake exhibit exchange coupling interaction between the two nanostructured phases of γ Fe 2O 3 and SrFe 12 O 19 . The exchange coupling interaction and the enhancement of isotropic (BH ) Max in nanocomposite SrFe 12 O 19 / γ Fe 2O 3 permanent ferrites have been discussed.
作者 刘先松 钟伟 杨森 姜洪英 顾本喜 都有为
机构地区 南京大学固体微结构国家重点实验室
出处 《淮阴师范学院学报（自然科学版）》 CAS 2002年第1期57-61,共5页 Journal of Huaiyin Teachers College;Natural Science Edition
基金 国家重点基础研究发展规划项目(G19990 64 5 0 8)
关键词 六角锶铁氧体 纳米复合 交换耦合 strontium hexaferrite nanocomposite exchange coupling
分类号 TB383 [一般工业技术—材料科学与工程] O482.5 [理学—固体物理]
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参考文献9

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同被引文献11

  • 1车如心,高宏,赵宏滨,曹魁.纳米永磁材料FeSmO_3的制备及磁性研究[J].材料热处理学报,2005,26(4):22-24. 被引量：3
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  • 3Parkin I P,Elwin G,Kuznetsov M V,et al.Self-propagating high temperature synthesis of MFe12O19(M=Sr,Ba) from the reactions of metal superoxides and iron metal[J].Journal of Materials Processing Technology,2001,110:239-243.
  • 4Kneller E F,Hawig R.One-dimensional exchange coupling model[J].IEEE Trans Magn,1991,27:3588.
  • 5Skomski R,Coey J M D.Giant energy product in nanostructured two-phased magnets[J].Phys Rev B,1993,48 (21):1581.
  • 6Yang Choong Jin,Eon Byung Park.The effect of heat treatment on enhanced exchange coupling of Nd2Fe14 B/Fe3 B magnet[J].IEEE Trans Magn,2003,32(5):4428-4430.
  • 7GAO Y,ZHANG S,LIU B.Heat treatment technology to the influence of pure iron magnetism ability[J].J Magn Magn Mater,2000,208:158.
  • 8Fischer R,Schrefl T,Kronmuller H,Fidler J.Grain size dependence of remanence and coercive field of isotropic nanocrystallinecomposite permanent magnets[J].J Magn Magn Mater,1996,153:35-49.
  • 9Puneet Sharma,Amitabh Verma,R K Sidhu,O P Pandey.Influence of Nd^3+ and Sm^3+ substitution on the magnetic properties of strontium ferrite sintered magnets[J].Journal of Alloys and Compounds,2003,361:261-264.
  • 10高汝伟,代由勇,陈伟,章亚明,张茂才,乔祎,王佐诚,李卫,李岫梅,王玉山,罗军.纳米晶复合永磁材料的交换耦合相互作用和磁性能[J].物理学进展,2001,21(2):131-156. 被引量：49

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淮阴师范学院学报（自然科学版）
2002年 第1期

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