The Role of Magnetic Vortex Formation in Chains of Spherical FeNi Nanoparticles: A Micromagnetics Study

被引：4

作者：

Barpandal, Prabeer ^{[1
,2
]}

Scheinfein, Michael R. ^{[3
]}

Kasama, Takeshi ^{[4
,5
]}

Dunin-Borkowski, Rafal E. ^{[4
,5
]}

机构：

[1] Rutgers State Univ, Dept Mat Sci & Engn, Piscataway, NJ 08854 USA

[2] Univ Picardie Jules Verne, Lab React & Chim Solides, CNRS, UMR 6007, F-80039 Amiens, France

[3] Simon Fraser Univ, Dept Phys, Burnaby, BC V5A 1S6, Canada

[4] Tech Univ Denmark, Ctr Elect Nanoscopy, DK-2800 Lyngby, Denmark

[5] Inst Phys & Chem Res, Hatoyama, Saitama 3500395, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS | 2009年 / 48卷 / 10期

关键词：

STONER-WOHLFARTH MODEL; NANOWIRES; REVERSAL; SPHERES;

D O I：

10.1143/JJAP.48.103002

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Magnetic remanent states and magnetization reversal mechanisms in linear chains of three closely-spaced Fe(1-x)Ni(x) nanoparticles are studied using micromagnetic simulations, for particle sizes of between 10 and 150 nm. The role of the formation and switching of magnetic vortices in the particles is demonstrated for external fields applied parallel to the chain axes. Variations in vortex core diameter, coercivity and vortex rotation plane with applied field are discussed. (C) 2009 The Japan Society of Applied Physics

引用

页码：1030021 / 1030026

页数：6

共 12 条

[1] FIRST APPROXIMATION TO MAGNETIZATION CURLING IN CHAIN OF SPHERES [J].

AHARONI, A .

JOURNAL OF APPLIED PHYSICS, 1964, 35 (02) :347-&

[2] Angular dependence of nucleation by curling in a prolate spheroid [J].

Aharoni, A .

JOURNAL OF APPLIED PHYSICS, 1997, 82 (03) :1281-1287

[3] Micromagnetics of magnetisation reversal mechanism in Permalloy chain-of-sphere structure with magnetic vortices [J].

Barpanda, P. .

COMPUTATIONAL MATERIALS SCIENCE, 2009, 45 (02) :240-246

[4]

Chong R.K.K., 2003, I PHYS C SER, V179, P451

[5] Stoner-Wohlfarth model applied to bicrystal magnetoresistance hysteresis [J].

Gunnarsson, R ;

Hanson, M ;

Dubourdieu, C .

JOURNAL OF APPLIED PHYSICS, 2004, 96 (01) :482-485

[6] Vortex flux channeling in magnetic nanoparticle chains -: art. no. 257207 [J].

Hÿtch, MJ ;

Dunin-Borkowski, RE ;

Scheinfein, MR ;

Moulin, J ;

Duhamel, C ;

Mazaleyrat, F ;

Champion, Y .

PHYSICAL REVIEW LETTERS, 2003, 91 (25)

[7] APPROACH TO ELONGATED FINE-PARTICLE MAGNETS [J].

JACOBS, IS ;

BEAN, CP .

PHYSICAL REVIEW, 1955, 100 (04) :1060-1067

[8] Magnetic properties and crystal structures of self-ordered ferromagnetic nanowires by ac electroforming [J].

Lee, KH ;

Lee, HY ;

Jeung, WY ;

Lee, WY .

JOURNAL OF APPLIED PHYSICS, 2002, 91 (10) :8513-8515

[9] Dynamic generalization of Stoner-Wohlfarth model [J].

Magni, A ;

Bertotti, G ;

Serpico, C ;

Mayergoyz, ID .

JOURNAL OF APPLIED PHYSICS, 2001, 89 (11) :7451-7453

[10] Magnetic properties and magnetization reversal of α-Fe nanowires deposited in alumina film [J].

Peng, Y ;

Zhang, HL ;

Pan, SL ;

Li, HL .

JOURNAL OF APPLIED PHYSICS, 2000, 87 (10) :7405-7408

← 1 2 →