阅读说明：本技术 具有多重磁性矫顽力的磁性物理不可克隆函数 (Magnetic physical unclonable function with multiple magnetic coercivities ) 是由 加里·A·丹顿 詹姆斯·P·德拉蒙德 罗伯特·亨利·麦森肯斯 于 2020-03-20 设计创作，主要内容包括：描述了两种不同的磁性矫顽力材料的使用,以便在同一安全对象上具有永久性内容和非永久性内容两者。提供具有聚合物基质复合材料的安全装置,该聚合物基质复合材料含有均匀分布的低矫顽力磁性材料,例如但不限于磁铁矿。结合该均匀背景,随机分布的高矫顽力磁性材料例如但不限于钕、铁和硼的合金(NdFeB)可以混合在第一均匀背景材料内,以在低矫顽力均匀背景内形成持久的磁性签名。这可以例如通过在一次复合操作中将低矫顽力材料和高矫顽力材料与一种基质材料复合来实现。(The use of two different magnetic coercivity materials is described to have both permanent and non-permanent content on the same security object. Security devices are provided having a polymer matrix composite containing a uniformly distributed low coercivity magnetic material such as, but not limited to, magnetite. In conjunction with this uniform background, a randomly distributed high coercivity magnetic material such as, but not limited to, an alloy of neodymium, iron, and boron (NdFeB) may be mixed within the first uniform background material to form a persistent magnetic signature within the low coercivity uniform background. This can be achieved, for example, by compounding the low coercivity material and the high coercivity material with a matrix material in one compounding operation.)