Departamento de Física, Universidade Federal do Rio Grande do Norte, 59078-900, Natal, RN, Brazil.
Sci Rep. 2023 Mar 17;13(1):4409. doi: 10.1038/s41598-023-31563-2.
We report on the nature of the interlayer magnetic interactions in NiFe/Cu/Co films. By probing the quasi-static and dynamic magnetic properties of biphase ferromagnetic films, with soft and hard ferromagnetic phases intermediated by a non-magnetic layer, we address aspects of the coupling between magnetic layers. Our results demonstrate the nature of the interlayer magnetic coupling in biphase films. We also disclose the asymmetric magnetoimpedance effect as a fingerprint of the nature of the magnetic interlayer interactions playing key role in the magnetization dynamics of the system. We revisit in literature data and ideas on the asymmetric magnetoimpedance and the nature of the magnetic interactions in biphase ferromagnetic systems. Then, we compare our findings with results for biphase ribbons and microwires. Our observations raise the fundamental similarities and differences in the asymmetric magnetoimpedance of these structures.
我们报告了 NiFe/Cu/Co 薄膜中层间磁相互作用的性质。通过探测双相铁磁薄膜的准静态和动态磁性能，其中软铁磁相和硬铁磁相由非磁性层隔开，我们研究了磁层之间耦合的各个方面。我们的结果表明了双相薄膜中层间磁耦合的性质。我们还揭示了非对称磁阻抗效应作为磁层间相互作用性质的指纹，这些相互作用在系统的磁化动力学中起着关键作用。我们重新研究了文献中关于双相铁磁系统中非对称磁阻抗和磁相互作用性质的资料和想法。然后，我们将我们的发现与双相带材和微丝的结果进行了比较。我们的观察结果揭示了这些结构的非对称磁阻抗的基本相似和不同之处。
