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2007 , Vol. 22 >Issue 3: 391 - 394

DOI: https://doi.org/10.3724/SP.J.1077.2007.00391

研究论文

纳米晶 Ni1-x ZnxFe2O4铁氧体粉料的制备及其磁性能研究

  • 刘银 ,
  • 丘泰
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  • 1. 南京工业大学材料学院, 南京 210009; 2. 安徽理工大学材料系, 淮南 232001

收稿日期: 2006-06-09

  修回日期: 2006-07-24

  网络出版日期: 2007-05-20

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Synthesis and Magnetic Properties of Nanocrystalline Ni1-x ZnxFe2O4 Ferrite

  • LIU Yin ,
  • QIU Tai
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  • 1. School of Materials Science and Engineering, Nanjing University of Technology, Nanjing 210009, China; 2. Deptartment of Materials Science and Engineering, Anhui University of Science and Technology, Huainan 232001, China

Received date: 2006-06-09

  Revised date: 2006-07-24

  Online published: 2007-05-20

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摘要

采用喷射-共沉淀法制备了纳米晶Ni1-xZnxFe2O4 (0≤x≤1.0)铁氧体粉料. 通过TG-DSC、XRD、SEM、TEM、BET等测试手段分析了其微观结构和形貌, 用振动样品磁强计测量其室温下磁性能. 结果表明: 喷射-共沉淀法制备的粉料颗粒细小均匀、形状完整. 600℃下煅烧1.5h, 样品晶粒尺寸为30nm左右, 平均颗粒尺寸<100nm. 室温下, 样品比饱和磁化强度随Zn2+含量增加而变化, 当x=0.5时, 最大比饱和磁化强度σs为66.8A·m2/kg. 当晶粒大小为41nm时, 纳米晶Ni0.5Zn0.5Fe2O4铁氧体矫顽力达到最大值5.06kA/m, 随后又随晶粒尺寸增大而减小. 这归因于纳米晶软磁材料中强烈的无序磁晶各向异性模式的影响.

关键词： 纳米材料; Ni1-xZnxFe2O4铁氧体; 喷射-共沉淀法; 磁性能

本文引用格式

刘银 , 丘泰 . 纳米晶 Ni1-x ZnxFe2O4铁氧体粉料的制备及其磁性能研究[J]. 无机材料学报, 2007 , 22(3) : 391 -394 . DOI: 10.3724/SP.J.1077.2007.00391

Abstract

Nanocrystalline Ni1-x ZnxFe2O4 ferrite with 0≤x≤1, was successfully prepared by a spraying-coprecipitation method. The microstructure was investigated by using TG-DSC, XRD, SEM, TEM as well as BET. Magnetic properties were measured with a vibrating sample magnetometer (VSM) at room temperature. The results show that uniform and fine nanocrystalline Ni1-xZnxFe2O4 ferrite powders are obtained by the spraying-coprecipitation method. The grain size is about 30 nm calcined at 600 for 1.5h. There are a few agglomerates with average sizes below 100nm. The specific saturation magnetization of nanocrystallineNi1-x ZnxFe2O4 ferrite increases with the concent of Zn2+ at room temperature, and maximum σs is 66.8A·m2/kg as the content of Zn2+ is around 0.5. When the grain size is 41nm, the coercivity Hc of nanocrystalline Ni0.5Zn0.5Fe2O4 ferrite arrives at 5.06kA/m, and then it decreases with the increase of the grain size. The results may be explained in terms of intense random magnetocrystalline anisotropy model in nanocrystalline materials.

Key words： nanocrystalline materials; Ni1-xZnxFe2O4 ferrite; spraying-coprecipitation method; magnetic properties

参考文献

[1] Dorman J L, Fiorani D. J Magn. Magn. Mater., 1995, 140-144: 415--418.
[2] Kodama R H. J Magn. Magn. Mater., 1999, 200: 359--372.
[3] Zhengxing Yue, Ji Zhou, Longtu Li, et al. J Magn. Magn. Mater., 2000, 208: 55--60.
[4] Buschow K H. J. Handbook of Magnetic Materials, First Edition. Amsterdam: North-Holland Co., 2003.
[5] Suryanarayana C. International Mater. Rev., 1995, 2: 41--63.
[6] 张立德, 牟季美. 纳米材料和纳米结构. 北京: 科学出版社, 2001.
[7] 文雯, 张怀武, 钟慧. 磁性材料及器件, 2005, 36 (3): 24--26.
[8] 任晓燕, 徐振佩, 何正明. 材料研究学报, 2004, 18 (3): 315--320.
[9] Islam M U, Abbas T, Shahida B Niazi, et al. Solid State Communications, 2004, 130: 353--357.
[10] 孙杰, 刘建华, 李松梅(SUN Jie, et al).无机材料学报(Journal of Inorganic Materials), 2005, 20 (5): 1077--1082.
[11] 李萌远, 李国栋. 铁氧体物理学. 北京: 科学出版社, 1978.
[12] 都有为. 材料导报, 2001, 15 (7): 6--8.
[13] Herzer G. Scripta Metall. Mater., 1995, 33 (10/11): 1741--1750.
[14] David J. Sellmyer, Yi Liu, D. Shindo, Handbook of Advanced Magnetic Materials, First Edition. Beijing: Tsinghua University Press, 2005. [15] 王丽, 周庆国, 孙建荣, 等. 磁性材料及器件, 2006, 37 (1): 23--25.
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