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掺Ni锰锌铁氧体力学与磁学性能
作者:余忠 兰中文  
单位:电子科技大学 电子薄膜与集成器件国家重点实验室 电子科技大学 电子薄膜与集成器件国家重点实验室  成都610054 成都610054 
关键词:锰锌铁氧体  镍掺杂  机械强度  磁性能 
分类号:TM277
出版年,卷(期):页码:2006,34(11):1387-1391
DOI:
摘要:
为了提高锰锌铁氧体的密度和力学性能,研究了Ni取代Mn对Zn0.32Mn0.60–xNixFe2.08O4铁氧体力学和磁学性能的影响。用X射线衍射和电子显微镜分析和观察样品的组成和微观形貌,计算了样品的晶格常数,测试了样品的密度、Vickers硬度、抗弯强度以及磁性能。结果表明在锰锌铁氧体中掺加NiO,能降低铁氧体的晶格常数,提高材料的密度,有利于锰锌铁氧体的晶粒减小以及气孔率的降低,进而改善Zn0.32Mn0.60–xNixFe2.08O4铁氧体的力学和磁学性能。
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In order to improve the density and mechanical strength of manganese-zinc ferrite, the effects of substituting Ni for Mn in manganese-zinc ferrite with a nominal composition of the Zn0.32Mn0.60–xNixFe2.08O4 doped with NiO on the mechanical strength and magnetic properties of manganese-zinc ferrite were investigated. The phase component and fracture surface micrograph of manga-nese-zinc ferrite samples were characterized by X-ray diffraction and scanning electron microscopy. The crystal lattice constant of the samples was calculated. The Vickers hardness, bending strength and magnetic properties of the samples were measured. The results show that the crystal lattice constant of manganese-zinc ferrite and the grain size decrease, while the density increases, and the me-chanical strength and magnetic properties of manganese-zinc ferrite are improved due to the substitution of Ni for Mn.
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基金项目:
教育部科学技术研究重点项目(106138);; 四川省科技攻关计划项目(06GG0338)。
作者简介:
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参考文献:
[1]VIJAY K B,RAJINDER K P.Hot-pressed Mn–Zn–Ni and Mn–Zn–Coferrites for magnetic recording heads[J].IEEE Trans Magn,1992,28(1):21–25. [2]TAKAMA E,ITO M.New Mn–Zn ferrite fabricated by hot isostatic pressing[J].IEEE Trans Magn,1979,15(6):1858–1860. [3]王崇琳.热等静压铁氧体磁头材料[J].粉末冶金技术,1998,16(1):5–11.WANG Chonglin.Powder Metall Technol(in Chinese),1998,16(1):5–11. [4]ANDREI P,CALTUN O F.Losses and magnetic properties of Bi2O3doped MnZn ferrites[J].J Magn Magn Mater,1999,196–197:362–364. [5]SEAFUE W,YUHRUEY W,THOMAS C K,et al.Densification and magnetic properties of low-fire NiCuZn ferrites[J].J Magn Magn Ma-ter,2000,220:129–138. [6]ONO K.,FUKUNANGA S,MATSUO Y.Mn–Zn ferrites with MoO3and other oxide additives[J].IEEE Trans Magn,1999,35(5):3406–3408. [7]CHEN S H,CHANG S C,YSAY C Y,et al.Improvement on magnetic power loss of MnZn-ferrite materials by V2O5and Nb2O5co-doping[J].J Eur Ceram Soc,2001,21:1931–1935. [8]余忠,兰中文,王京梅.CaO,V2O5添加剂对高频MnZn功率铁氧体性能的影响[J].材料研究学报,2004,18(2):176–180.YU Zhong,LAN Zhongwen,WANG Jingmei.Chin J Mater Res(in Chinese),2004,18(2):176–180. [9]MSTSUO Y,ONO K.Magnetic properties and mechanical strength of MnZn ferrite[J].IEEE Trans Magn,2001,37(4):2369–2372.
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