Vivas Laura G, Ruiz-Clavijo Alejandra, Caballero-Calero Olga, Navas David, Ordoñez-Cencerrado Amanda A, Manzano Cristina V, Sanz Ruy, Martín-González Marisol
Instituto de Micro y Nanotecnología, IMN-CNM, CSIC (CEI UAM+CSIC) Isaac Newton, 8, Tres Cantos, Madrid, E-28760, Spain.
Instituto de Ciencia de Materiales de Madrid, CSIC, Cantoblanco, 28049 Madrid, Spain.
Nanoscale. 2025 Feb 6;17(6):3014-3022. doi: 10.1039/d4nr04078c.
Three-dimensional magnetic nanowire networks (3DNNs) have shown promise for applications beyond those of their linear counterparts. However, understanding the underlying magnetization reversal mechanisms has been limited. In this study, we present a combined experimental and computational investigation on simplified 3DNNs to address this gap. Our findings reveal a previously unidentified in-plane magnetoelastic anisotropy, validated through comparisons between experimental and simulated magnetic data. Notably, we discovered that magnetization reversal in 3DNNs is driven by highly localized magnetic states, arising from the interplay of exchange and dipolar interactions, magnetoelastic anisotropy, and nanowire microstructure. This discovery challenges the prevailing understanding of magnetization reversal in nickel nanowires. Our work provides critical insights into the magnetic behavior of 3DNNs, opening doors for their tailored design and optimization.
三维磁性纳米线网络（3DNNs）已展现出超越其线性对应物的应用前景。然而，对其潜在的磁化反转机制的理解一直有限。在本研究中，我们对简化的3DNNs进行了实验与计算相结合的研究，以填补这一空白。我们的研究结果揭示了一种先前未被识别的面内磁弹性各向异性，通过实验和模拟磁数据之间的比较得到了验证。值得注意的是，我们发现3DNNs中的磁化反转是由高度局域化的磁态驱动的，这些磁态源于交换相互作用、偶极相互作用、磁弹性各向异性和纳米线微观结构之间的相互作用。这一发现挑战了对镍纳米线中磁化反转的主流理解。我们的工作为3DNNs的磁行为提供了关键见解，为其定制设计和优化打开了大门。
