Experimental characterization of magnetic Barkhausen noise on the strain of electroplated nickel film
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摘要: 探讨了紫铜基板表面电镀镍膜拉应变的磁巴克豪森噪声测试和表征方法。首先，构建了能够同步测量电镀镍膜拉伸过程中应变和磁巴克豪森噪声信号的试验装置，获得了不同厚度镍膜中表面切向磁场强度信号，以及不同应变条件下的磁巴克豪森噪声，并从两种信号中筛选出对镍膜厚度、应变敏感的特征磁参量；最后，通过方程拟合分析了特征磁参量对镍膜厚度、拉应变的定量表征能力。结果表明，随着镍膜厚度增加，切向磁场强度的基波幅值（A1）呈现良好线性下降趋势；磁巴克豪森噪声特征参量（Mmax或Mmean）和拉应变的依赖关系服从指数型衰减函数关系。通过组合两种信号的特征参量，可以实现镍膜厚度和拉应变的定量检测。Abstract: The magnetic Barkhausen noise method was used to measure and characterize the tensile strain of electroplated nickel film on red copper substrate.First of all, an experimental device was built to synchronously measure the strain and magnetic Barkhausen noise signals during the tensile process of electroplated nickel film; Secondly, the tangential magnetic field intensity signals on the surface of nickel films with different thicknesses and the magnetic Barkhausen noise under different strain conditions were obtained, and the characteristic magnetic parameters sensitive to the thickness and strain of nickel films were selected from the two signals; Finally, the quantitative characterization ability of characteristic magnetic parameters to nickel film thickness and tensile strain was analyzed by equation fitting. The results showed that the amplitude of fundamental wave (A1) of tangential magnetic field intensity decreased linearly with the increase of nickel film thickness; Dependence of the characteristic parameters of the magnetic Barkhausen noise (Mmax or Mmean) on tensile strain obeyed exponential decay function. By combining the characteristic parameters of the two signals, the quantitative measurement of nickel film thickness and tensile strain can be realized.
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[1] CHASON E, GUDURU P R. Tutorial:understanding residual stress in polycrystalline thin films through real-time measurements and physical models[J]. Journal of Applied Physics, 2016, 119(19):191101.
[2] 翁章钊, 周白杨, 黎思文, 等. 应力对退火态Sm-Fe-BGMF磁学性能的影响[J]. 中国稀土学报, 2014, 32(4):425-429. [3] NOCE R D, BARELLI N, MARQUES R F C, et al. The influence of residual stress and crystallite size on the magnetic properties of electrodeposited nanocrystalline Pd-Co alloys[J]. Surface and Coatings Technology, 2007, 202(1):107-113.
[4] LIU J, XU B, WANG H, et al. Effects of film thickness and microstructures on residual stress[J]. Surface Engineering, 2016, 32(3):178-184.
[5] TOTEMEIER T C, WRIGHT J K. Residual stress determination in thermally sprayed coatings-a comparison of curvature models and X-ray techniques[J]. Surface and Coatings Technology, 2006, 200(12/13):3955-3962.
[6] BETZ B, RAUSCHER P, HARTI R P, et al. In-situ visualization of stress-dependent bulk magnetic domain formation by neutron grating interferometry[J]. Applied Physics Letters, 2016, 108(1):012405.
[7] 沈功田, 郑阳, 蒋政培, 等. 磁巴克豪森噪声技术的发展现状[J]. 无损检测, 2016, 38(7):66-74. [8] HOFFMANN J, MEYENDORF N, ALTPETER I. Characterization of softmagnetic thin layers using barkhausen noise microscopy[J]. Mrs Proceedings, 2001, 674:6.
[9] 蒋政培, 凌张伟, 王敏. 磁巴克豪森噪声技术在应力评估中的研究进展[J]. 无损检测, 2018, 40(8):67-74. [10] 何存富, 丁冬冬, 刘秀成, 等. 65Mn钢板电镀镍层厚度的增量磁导率检测方法[J].北京工业大学学报, 2020, 46(7):727-733. [11] CALLEGARO L, PUPPIN E. Stress dependence of coercivity in Ni films:thin film to bulk transition[J]. Applied Physics Letters, 1996, 68(9):1279-1281.
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