We report our systematic investigation of temperature-dependent Barkhausen volume behavior for CoFeB/Pd with perpendicular magnetic anisotropy by means of magneto-optical Kerr microscopy. In the temperature range where two-dimensional (2D) Ising-like and single-domain features are sustained, hysteresis parameters such as coercivity, hysteresis area, and saturation magnetization are quantitatively analyzed with respect to the temperature. Interestingly it is demonstrated that the Barkhausen length is directly proportional to the domain-wall width via the magnetic anisotropy in this single-domain and 2D Ising-like model system.

中文翻译：

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二维类伊辛铁磁薄膜中与温度相关的巴克豪森体积

我们报告了通过磁光克尔显微镜对具有垂直磁各向异性的 CoFeB/Pd 的温度依赖性巴克豪森体积行为的系统研究。在二维（2D）类伊辛和单畴特征持续的温度范围内，对矫顽力、磁滞面积和饱和磁化强度等磁滞参数相对于温度进行定量分析。有趣的是，在这个单畴和类伊辛模型系统中，通过磁各向异性证明了巴克豪森长度与畴壁宽度成正比。