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The influence of AC current (with amplitud of Iac ＝0.2—20 mA and frequency of f＝1 kHz—1 MHz) upon the profile of gian magnetoimpedance (GMI) effect of a Fe-based nanocrystalline wire with transverse domain structure have been investigated. The experiment indicates that the GMI effect of the sample exhibits a two-peak feature. With the increasing of f, the peak field Hm increases, while Hm decreases even to H=0 when Iac increases. According to the current theoretical models, the peak field Hm should conrrespond to the transverse anisotropy field Hk, Hm=Hk. However, we found that this conclusion is correct only for the case of very small AC current. So a relationship Hm=Hk cos3θ, where θ is the angle between saturation magnetisation and the axis of wire, has been deduced by minimizing the energy in the process of magnetisation rotation. The experiments can be explained by this result.
[1] Bao B H, Ren N F, Wang G Y 2008 Acta Phys. Sin. 57 2519 (in Chinese) [鲍丙豪、任乃飞、王国余 2008物理学报 57 2519]
[2] Zhang 2002 J. Magn. Magn. Mater. 239 567
[3] Coisson M, Tiberto P, Vinai F, Tyagi P V, Modak S S, Kane S N 2008 J. Magn Magn Mater. 320 510
[4] Ahmet Peksoz, Yunus Kaya, Asli Ayten Taysioglu, Naim Derebasi, Gokay Kaynak 2010 Sensors and Actuators A 159 69
[5] Phan M H, Peng H X 2008 Prog. Mater. Sci. 53 323
[6] Chen D X, Munoz J L, Hernando A, Vazquez M 1998 Phys. Rev. B 57 10699
[7] Vulfovich P J, Panina L V 2000 Sensors and Actuators 81 111
[8] Makhnovskiy D P, Panina L V, Mapps D J 2001 Phys. Rev. B 63 144424
[9] Vázquez Manuel 2001 J. Magn Magn Mater. 226-230 693
[10] Knobel M, Pirota K R 2002 J. Magn Magn Mater. 242-245 33
[11] Wei Han, Deren Li, Zhichao Lu, Shaoxion Zhou, Honghao
[12] Xin H L, Yuan W Z, Cheng J K, Lin H, Ruan J Z, Zhao Z J 2007 Acta Phys. Sin. 56 4152 (in Chinese) [辛宏梁、袁望治、程金科、 林 宏、阮建中、赵振杰 2007 物理学报56 4152]
[13] Pang H Li G, Wang Z J 2008 Acta Phys. Sin. 57 7194 (in Chinese) [庞 浩、李 根、 王赞基2008物理学报57 7194]
[14] Zhang S L, Sun J F, Xing D W 2010 Acta Phys. Sin. 59 2068 (in Chinese) [张树玲、 孙剑飞、 邢大伟 2010物理学报 59 2068]
[15] Li Y F, Yin S Z, Vazquez M 2005 Acta Phys. Sin. 54 3391 (in Chinese) [李印峰、 尹世忠、Vazquez M 2005 物理学报 54 3391]
[16] Cullity B D 1972 Introduction to magnetic materials (Massachusetts: Addison-Wesley Publishing Company) p505
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[1] Bao B H, Ren N F, Wang G Y 2008 Acta Phys. Sin. 57 2519 (in Chinese) [鲍丙豪、任乃飞、王国余 2008物理学报 57 2519]
[2] Zhang 2002 J. Magn. Magn. Mater. 239 567
[3] Coisson M, Tiberto P, Vinai F, Tyagi P V, Modak S S, Kane S N 2008 J. Magn Magn Mater. 320 510
[4] Ahmet Peksoz, Yunus Kaya, Asli Ayten Taysioglu, Naim Derebasi, Gokay Kaynak 2010 Sensors and Actuators A 159 69
[5] Phan M H, Peng H X 2008 Prog. Mater. Sci. 53 323
[6] Chen D X, Munoz J L, Hernando A, Vazquez M 1998 Phys. Rev. B 57 10699
[7] Vulfovich P J, Panina L V 2000 Sensors and Actuators 81 111
[8] Makhnovskiy D P, Panina L V, Mapps D J 2001 Phys. Rev. B 63 144424
[9] Vázquez Manuel 2001 J. Magn Magn Mater. 226-230 693
[10] Knobel M, Pirota K R 2002 J. Magn Magn Mater. 242-245 33
[11] Wei Han, Deren Li, Zhichao Lu, Shaoxion Zhou, Honghao
[12] Xin H L, Yuan W Z, Cheng J K, Lin H, Ruan J Z, Zhao Z J 2007 Acta Phys. Sin. 56 4152 (in Chinese) [辛宏梁、袁望治、程金科、 林 宏、阮建中、赵振杰 2007 物理学报56 4152]
[13] Pang H Li G, Wang Z J 2008 Acta Phys. Sin. 57 7194 (in Chinese) [庞 浩、李 根、 王赞基2008物理学报57 7194]
[14] Zhang S L, Sun J F, Xing D W 2010 Acta Phys. Sin. 59 2068 (in Chinese) [张树玲、 孙剑飞、 邢大伟 2010物理学报 59 2068]
[15] Li Y F, Yin S Z, Vazquez M 2005 Acta Phys. Sin. 54 3391 (in Chinese) [李印峰、 尹世忠、Vazquez M 2005 物理学报 54 3391]
[16] Cullity B D 1972 Introduction to magnetic materials (Massachusetts: Addison-Wesley Publishing Company) p505
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