标题： 三维高斯RFIM中钉扎场的统计性质 显示英文标题

标题： Statistical properties of pinning fields in the 3d-Gaussian RFIM

摘要： 我们将钉扎场定义为在去磁过程中，那些在负外部施加场区域中保持一些磁矩不反转的随机场。 在高斯随机场伊辛模型（RFIM）的框架内，对这类钉扎场的统计特性进行了分析。 我们表明，钉扎场的平均值在矫顽场附近出现急剧增加，并且这种增加对于低度无序情况是不连续的。 这种行为可以用标准的有限尺寸标度（FSS）假设来描述。 此外，我们还表明，对应于接近矫顽力状态的钉扎场表现出强烈的统计相关性。 显示英文摘要

摘要： We have defined pinning fields as those random fields that keep some of the magnetic moments unreversed in the region of negative external applied field during the demagnetizing process. An analysis of the statistical properties of such pinning fields is presented within the context of the Gaussian Random Field Ising Model (RFIM). We show that the average of the pinning fields exhibits a drastic increase close to the coercive field and that such an increase is discontinuous for low degrees of disorder. This behaviour can be described with standard finite size scaling (FSS) assumptions. Furthermore, we also show that the pinning fields corresponding to states close to coercivity exhibit strong statistical correlations.