Analysis of domain wall dynamics based on skewness of magnetic Barkhausen noise for applied stress determination
Analysis of domain wall dynamics based on skewness of magnetic Barkhausen noise for applied stress determination
复制标题
基于磁巴克豪森噪声偏度的磁畴壁动力学分析，用于确定外加应力
DOI：
10.1016/j.jmmm.2016.08.030
复制
发表时间：
2017-01-01
影响因子：
2.7
通讯作者：
Wang, Ping
中科院分区：
文献类型：
--
作者：
Ding, Song;Tian, GuiYun;Wang, Ping
利用磁巴克豪森噪声（MBN）信号的偏度作为确定外加应力的新特征。通过实验研究，与传统特征相比，偏度表现出了测量外加拉应力的能力，同时发现并讨论了这种新特征在压应力下的非线性行为和与激励条件的独立性。讨论了在压应力和拉应力变化下，畴壁运动时的有效阻尼对MBN统计分布函数不对称形状的影响。考虑了畴壁能量和畴壁钉边之间的距离会改变畴壁的特征松弛时间，这是产生非线性偏态现象的原因。(C) 2016 Elsevier B.V.版权所有
Skewness of Magnetic Barkhausen Noise (MBN) signal is used as a new feature for applied stress determination. After experimental studies, skewness presents its ability for measuring applied tensile stress compared with conventional feature, meanwhile, a non-linear behavior of this new feature and an independence of the excitation conditions under compressive stress are found and discussed. Effective damping during domain wall motion influencing the asymmetric shape of the MBN statistical distribution function is discussed under compressive and tensile stress variation. Domain wall (DW) energy and distance between pinning edges of the DW are considered altering the characteristic relaxation time, which is the reason for the non-linear phenomenon of skewness. (C) 2016 Elsevier B.V. All rights reserved.