Sn<sup>4+</sup>取代对NiZn功率铁氧体磁性能的影响

doi:10.11868/j.issn.1001-4381.2015.08.012

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摘要

采用固相反应法制备化学计量为Ni_0.65Zn_0.35Sn_xFe_2-xO₄(x=0.00~0.08)的铁氧体软磁材料。采用XRD、SEM、LCR测试仪、B-H分析仪对其结构、电磁性能进行研究。结果表明:随Sn⁴⁺取代量x的增加,晶格常数a逐渐增大,晶粒尺寸变化不大,饱和磁通密度B_s逐渐下降,铁氧体的起始磁导率μ_i先上升后下降,功率损耗P_cv与μ_i的变化呈相反趋势。当Sn⁴⁺的取代量x=0.04时具有最低的功率损耗,且P_cv随着温度的升高而逐渐降低。

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	马玉启
	刘先松
	冯双久
	黄鑫
	黄风

关键词 ： NiZn功率铁氧体, Sn⁴⁺取代, 起始磁导率, 功率损耗

Abstract：

The stoichiometric Ni_0.65Zn_0.35Sn_xFe_2-xO₄ (x=0.00-0.08) power ferrites soft magnetic material was prepared by the solid-state reaction method. The structural characteristics and electromagnetic properties were investigated by X-ray diffraction(XRD), SEM, LCR tester, B-H analyzer, respectively. The results indicate that with increasing Sn⁴⁺ substitution amount, lattice constant a increases gradually, grain size varies not much, saturation magnetic flux density B_s continuously decreases, initial permeability μ_i of the ferrites increases initially and then decreases, and power loss P_cv has an opposite change with μ_i.The power loss P_cv has a minimum value when the Sn⁴⁺ substitution amount is 0.04 and P_cv decreases gradually when the temperature increases.

Key words： NiZn power ferrites Sn⁴⁺ substitution initial permeability power loss

收稿日期: 2014-04-11 出版日期: 2015-08-17

基金资助:国家自然科学基金资助项目(51072002,51272003);安徽省教育厅重点科研项目资助(KJ2010A008,KJ2012A027);2013年度安徽省级自然科学研究项目资助(KJ2013B293);高等学校博士学科点专项科研基金资助(20123401110008)

通讯作者: 刘先松 E-mail: xiansongliu@ahu.edu.cn

作者简介: 刘先松(1962—),男,教授,博士,主要从事磁性材料及器件的制备与性能研究工作,联系地址:安徽省合肥市九龙路111号安徽大学物理与材料科学学院(230601),E-mail:xiansongliu@ahu.edu.cn

引用本文:

马玉启, 刘先松, 冯双久, 黄鑫, 黄风. Sn⁴⁺取代对NiZn功率铁氧体磁性能的影响[J]. 材料工程, 2015, 43(8): 72-76.
Yu-qi MA, Xian-song LIU, Shuang-jiu FENG, Xin HUANG, Feng HUANG. Influence of Sn⁴⁺ Substitution on Magnetic Properties of NiZn Power Ferrites. Journal of Materials Engineering, 2015, 43(8): 72-76.

链接本文:

http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2015.08.012 或 http://jme.biam.ac.cn/CN/Y2015/V43/I8/72

Fig.1 Ni_0.65Zn_0.35Sn_xFe_2-xO₄的XRD图谱

Table 1 Ni_0.65Zn_0.35Sn_xFe_2-xO₄的晶格常数和密度

Fig.2 不同Sn⁴⁺取代量下样品的微观形貌
(a)x=0.00;(b)x=0.02;(c)x=0.04;(d)x=0.06;(e)x=0.08

Fig.3 不同Sn⁴⁺取代量下起始磁导率的温度特性

Fig.4 B_s随Sn⁴⁺取代量的变化

Fig.5 不同Sn⁴⁺取代量下功率损耗与温度的关系

Fig.6 不同Sn⁴⁺取代量下相对损耗因子与磁通密度的关系

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