采用溶胶凝胶自燃烧法制备了钴掺杂的Mn-Zn铁氧体,研究了少量钴掺杂对其结构和磁性质的影响.利用X射线衍射仪对制备的粉末测试发现,Mn0.4Zn0.6-xCoxFe2O4系列铁氧体都具有纯净的尖晶石结构.晶格常数和饱和磁化强度都随着钴替代量的增加而增加.μi-T线具有两个磁导率最大的峰值并且磁导率的第二峰值随着钴的增加向低温移动.磁导率的第二峰值的温度可以通过改变钴含量来调节.基于铁氧体中磁晶各向异性补偿模型,阐明了少量钴掺杂对铁氧体磁性质影响的作用机理.
Co-doped manganese-zinc (Mn-Zn) ferrites were prepared by a sol-gel auto-combustion method.Effect of a small amount of cobalt substitution on the structure and magnetic properties of the Mn-Zn ferrites was investigated.As-synthesized Mn0.4Zn0.6-xCozFe2O4 ferrites,characterized by X-ray diffraction (XRD),have demonstrated the pure phase of spinel structure.The saturation magnetization and lattice parameter increase with increasing Co content.It is interesting to note theμi-T curve exhibits two maximum peaks and the secondary maximum peak of initial permeability shift to a lower temperature with the increasing of Co content.The temperature of secondary maximum peak could be adjusted by the Co content.The corresponding mechanism was clarified based on the magnetocrystalline anisotropy compensation model.
参考文献
| [1] | Fujita A.;Gotoh S. .Temperature dependence of core loss in Co-substituted MnZn ferrites[J].Journal of Applied Physics,2003(10 Pt.2):7477-7479. |
| [2] | Ji, HN;Lan, ZW;Yu, Z;Sun, K;Li, LZ .Influence of Sn-substitution on temperature dependence and magnetic disaccommodation of manganese-zinc ferrites[J].Journal of Magnetism and Magnetic Materials,2009(14):2121-2124. |
| [3] | Lucas, A.;Lebourgeois, R.;Mazaleyrat, F.;Laboure, E. .Temperature dependence of core loss in cobalt substituted NiZnCu ferrites[J].Journal of Magnetism and Magnetic Materials,2011(6):735-739. |
| [4] | Lezhong Li;Zhongwen Lan;Zhong Yu .Effects of Co-substitution on wide temperature ranging characteristic of electromagnetic properties in MnZn ferrites[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2009(1/2):755-759. |
| [5] | Influence of Fe<sub>2</sub>O<sub>3</sub> Stoichiometry on Initial Permeability and Temperature Dependence of Core Loss in MnZn Ferrites[J].IEEE Transactions on Magnetics,2008(1 Pt.1):13. |
| [6] | Liu YP;He SJ .Development of low loss Mn-Zn ferrite working at frequency higher than 3 MHz[J].Journal of Magnetism and Magnetic Materials,2008(23):3318-3322. |
| [7] | Zhenxing Yue;Ji Zhou;Longtu Li .Synthesis of nanocrystalline NiCuZn ferrite powders by sol-gel auto-combustion method[J].Journal of Magnetism and Magnetic Materials,2000(1/2):55-60. |
| [8] | Siva Ram Prasad, M.;Prasad, B.B.V.S.V.;Rajesh, B.;Rao, K.H.;Ramesh, K.V. .Magnetic properties and DC electrical resistivity studies on cadmium substituted nickelzinc ferrite system[J].Journal of Magnetism and Magnetic Materials,2011(16):2115-2121. |
| [9] | JianLiang Xie;Mangui Han;Liang Chen;Renxiong Kuang;Longjiang Deng .Microwave-absorbing properties of NiCoZn spinel ferrites[J].Journal of Magnetism and Magnetic Materials,2007(1):37-42. |
| [10] | Arulmurugan R;Jeyadevan B;Vaidyanathan G;Sendhilnathan S .Effect of zinc substitution on Co-Zn and Mn-Zn ferrite nanoparticles prepared by co-pecipitation[J].Journal of Magnetism and Magnetic Materials,2005(0):470-477. |
| [11] | Shirsath, S.E.;Toksha, B.G.;Kadam, R.H.;Patange, S.M.;Mane, D.R.;Jangam, G.S.;Ghasemi, A. .Doping effect of Mn~2 on the magnetic behavior in NiZn ferrite nanoparticles prepared by solgel auto-combustion[J].The journal of physics and chemistry of solids,2010(12):1669-1675. |
| [12] | Paiboon Nakmahachalasint;Khai D. T. Ngo;Loc Vu-Quoc .Thermal Behavior of a Dynamic Domain-Wall Motion Model for Hysteresis in Power Ferrites[J].IEEE Transactions on Magnetics,2005(1):140-143. |
| [13] | Yapi Liu;Shijin He .Development of high DC-bias Mn-Zn ferrite working at frequency higher than 3 MHz[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2010(2):523-529. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%