Magnetic properties of ordered arrays of iron nanowires: The impact of the length

被引：14
|
作者：
Elmekawy, A. H. A. [1 ,2 ]
Iashina, E. [3 ]
Dubitskiy, I [3 ]
Sotnichuk, S. [1 ,4 ]
Bozhev, I [5 ,6 ]
Kozlov, D. [4 ,7 ]
Napolskii, K. [4 ,8 ]
Menzel, D. [9 ]
Mistonov, A. [1 ]
机构：
[1] St Petersburg State Univ, Dept Phys, St Petersburg 198504, Russia
[2] Atom Energy Author, Nucl Res Ctr, Cyclotron Project, Cairo 13759, Egypt
[3] Natl Res Ctr, Kurchatov Inst, Petersburg Nucl Phys Inst, Gatchina 188300, Leningrad Regio, Russia
[4] Moscow MV Lomonosov State Univ, Dept Mat Sci, Moscow 119991, Russia
[5] Moscow MV Lomonosov State Univ, Dept Phys, Moscow 119991, Russia
[6] Moscow MV Lomonosov State Univ, Quantum Technol Ctr, Moscow 119991, Russia
[7] Russian Acad Sci, Kurnakov Inst Gen & Inorgan Chem, Moscow 119991, Russia
[8] Moscow MV Lomonosov State Univ, Dept Chem, Moscow 119991, Russia
[9] Inst Condensed Matter Phys, D-308108 Braunschweig, Germany
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2021年 / 532卷
基金：
俄罗斯科学基金会;
关键词：
Ferromagnetic nanowire arrays; Iron nanowires; Anodic alumina; First-order reversal curve; SQUID-magnetometry; MAGNETOSTATIC INTERACTIONS; HEXAGONAL-ARRAYS; VARYING LENGTH; REVERSAL MODES; FORC DIAGRAMS; ALUMINA; GROWTH; ELECTRODEPOSITION; ANISOTROPY; ALLOYS;
D O I：
10.1016/j.jmmm.2021.167951
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
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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页数：8
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