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.

引用

页数：8

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