Tb0.3Dy0.7Fe2合金磁畴偏转研究

李立毅; 严柏平; 张成明; 曹继伟

doi:10.7498/aps.61.167506

摘要

研究了Tb0.3Dy0.7Fe2合金在压磁和磁弹性效应中的磁畴偏转和磁导率特性. 基于Stoner-Wolhfarth 模型能量极小原理, 绘制了自由能与磁畴偏转角度的关系曲线, 研究了压应力和磁场载荷作用下磁畴角度的偏转特性, 计算分析了不同载荷作用下磁畴偏转的磁导率特性, 并与实验数据进行比较论证. 研究表明,应力和磁场的作用都将使磁畴方向[111]和[111]发生角度跃迁, 直观有效地解释了材料巨磁致伸缩效应的机理; 应力和磁场作用下磁畴的偏转将使材料磁导率呈减小趋势, 其中磁场能对磁导率的影响大于应力能, 这一现象在小载荷作用下尤为明显. 实验结果表明, 磁导率的计算数据与实验数据符合得较好, 验证了计算方法的正确性. 理论分析对Terfenol-D磁畴偏转模型的完善和磁化过程中磁滞回线的绘制非常有意义.

关键词:

Abstract

The characteristics of magnetic domain deflection and permeability under piezomagnetic and magnetoelastic effects in Tb0.3Dy0.7Fe2 alloy are studied in this paper. Based on the minimal value principle of Stoner-Wolhfarth model, the curve of free energy versus domain deflection angle is analyzed, and the angle deflections of magnetic domain under differ compressive stresses and magnetic fields are discussed. The calculational and experimental results of permeability under stress and magnetic field loads are used to confirm the analysis of domain deflection in ally. These results indicate that the magnetic domains [111] and [111] each have a transition effect of angle deflection with the increase of stress and magnetic field, which can be used to explain the huge magneticostrictive mechanism of Terfenol-D. Also, permeability has a negative relation with stress and magnetic field, and the influence of magnetic energy on permeability is greater than the stress energy effect, especially under small loads. The experimental results of permeability are in a good agreement with the calculations confirming the validity of calculation and analyzsis. The above computations have a significant guidance for analyzing and studying the magnetic domain deflection model and hysteresis in Terfenol-D.

Keywords:

作者及机构信息

1.
哈尔滨工业大学电磁与电子技术研究所, 哈尔滨 150001

基金项目: 国家高技术研究发展计划 (批准号: 2007AA04Z333)资助的课题.

Authors and contacts

1.
Institute of Electromagnetic and Electronic Technology, Harbin Institute of Technology, Harbin 150001, China

Funds: Project supported by the National High Technology Research and Development Program of China (Grant No. 2007AA04Z333).

参考文献

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施引文献

[1]	Eason G, Noble B, Sneddon I N 2000 Sensor. Actuat. A 81 275
[2]	Bottauscio O, Roccato P E, Zucca M 2010 IEEE Trans. Magn. 46 3022
[3]	Zucca M, Roccato P E, Bottauscio O, Beatrice C 2010 IEEE Trans. Magn. 46 183
[4]	Grunwald A, Olabi A G 2008 Sensor. Actuat. A 144 161
[5]	Karunanidhi S, Singaperumal M 2010 Sensor. Actuat. A 157 185
[6]	Davino D, Giustiniani A, Visone C 2010 IEEE Trans. Magn. 46 646
[7]	Cullity B D, Graham C D 2009 Introduction to Magnetic Materials (New Jersey: Wiley) p258
[8]	Clark A E, Yoo J H, Cullen J R, Fogle M W, Petculescu G, Flatau A 2009 J. Appl. Phys. 105 07A913
[9]	Yan J C, Xie X Q, Yang S Q, He S Y 2001 J. Magn. Magn. Mater. 223 27
[10]	Mei W, Umeda T, Zhou S, Wang R 1997 J. Alloys Compd. 248 151
[11]	Liu J H, Wang Z B, Jiang C B, Xu H B 2010 J. Appl. Phys. 108 033913
[12]	Chen Y H, Jiles D C 2001 IEEE Trans. Magn. 37 3069
[13]	Clark A E, Savege H T, Spano M L 1984 IEEE Trans. Magn. 20 1443
[14]	Jiles D C, Thoelke J B 1994 J. Magn. Mater. 134 143
[15]	Zhang H, Zeng D C 2010 Atca Phys. Sin. 59 2808 (in Chinese) [张辉, 曾德长 2010 59 2808]
[16]	Zhang H, Zeng D C, Liu Z W 2011 Atca Phys. Sin. 60 067503 (in Chinese) [张辉,曾德长,刘仲武 2011 60 067503]
[17]	Zhang H, Zeng D C 2010 J. Appl. Phys. 107 123918
[18]	Stoner E C, Wohifarth E P 1948 Philos. Trans. Roy. Soc. London A 240 599
[19]	Mei W, Okane T, Umeda T 1998 J. Appl. Phys. 84 6208
[20]	Jiles D C, Hariharan S 1990 J. Appl. Phys. 67 5013
[21]	Marcelo J D, Ralph C S, Alison B F 1999 SPIE 3668 405
[22]	Calkins F T, Smith R C, Flatau A B 2000 IEEE Trans. Magn. 36 429
[23]	Wang Z B, Liu J H, Jiang C B, Xu H B 2010 J. Appl. Phys. 108 063908

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