Journal
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
Volume 532, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.jmmm.2021.167951
Keywords
Ferromagnetic nanowire arrays; Iron nanowires; Anodic alumina; First-order reversal curve; SQUID-magnetometry
Funding
- Russian Science Foundation [18-72-00011]
- Interdisciplinary Scientific and Educational School of Moscow University Future Planet: Global Environmental Change
- Russian Science Foundation [18-72-00011] Funding Source: Russian Science Foundation
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The research focuses on the investigation of the magnetic properties of hexagonally ordered iron nanowire arrays electrodeposited into anodic alumina templates. The increase in coercivity with nanowire length is well described by a model of interacting wires, likely magnetized by a vortex domain wall mechanism.
The present study is focused on the investigation of the magnetic properties of hexagonally ordered iron nanowire arrays electrodeposited into anodic alumina templates. A series of 9 arrays of nanowires with a diameter of 52 nm, an interwire distance of 100 nm, and a length varying from 3.6 to 21.2 ?m is analyzed. Scanning electron microscopy, X-ray diffraction, SQUID magnetometry, and first-order reversal curves (FORC) analysis are used for the characterization of the nanowire arrays. The increase in coercivity with nanowire length is well described by a model of interacting wires, which are magnetized likely by a vortex domain wall mechanism. According to the width of distribution observed in the FORC diagrams, interaction fields decrease with increasing length, which supports the proposed model.
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