论文标题
实验证明和分析铁磁性/抗铁磁铁双层中的随机场效应
Experimental demonstration and analysis of random field effects in ferromagnet/antiferromagnet bilayers
论文作者
论文摘要
30多年前，Malozemoff（Phys。V.B 35，3679（1987））假设在Ferromagnet（F）和抗fiferromagnet（AF）之间的界面上的交换相互作用可以充当有效的随机场，这可以深远影响系统的磁性特性。但是，到目前为止，该假设尚未直接对实验测试。我们利用磁性测量值来分析Permalloy/COO界面处的有效交换场。我们的结果不能用准均匀的有效交换场来解释，但与Malozemoff的随机假设一致。提出的方法为用于记忆，传感和计算应用的磁异质结构中有效交换场和各向异性的定量分析开辟了新的途径。
More than 30 years ago, Malozemoff (Phys. Rev. B 35, 3679 (1987)) hypothesized that exchange interaction at the interface between a ferromagnet (F) and an antiferromagnet (AF) can act as an effective random field, which can profoundly affect the magnetic properties of the system. However, until now this hypothesis has not been directly experimentally tested. We utilize magnetoelectronic measurements to analyze the effective exchange fields at Permalloy/CoO interface. Our results cannot be explained in terms of quasi-uniform effective exchange fields, but are in agreement with the random-field hypothesis of Malozemoff. The presented approach opens a new route for the quantitative analysis of effective exchange fields and anisotropies in magnetic heterostructures for memory, sensing and computing applications.
