Phase diagrams of magnetic nanotubes

被引：84

作者：

Escrig, J.

Landeros, P.

Altbir, D.

Vogel, E. E.

Vargas, P.

机构：

[1] Univ Tecn Federico Santa Maria, Dept Fis, Valparaiso, Chile

[2] Univ La Frontera, Dept Ciencias Fis, Temuco, Chile

[3] Univ Santiago, USACH, Dept Fis, Santiago, Chile

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2007年 / 308卷 / 02期

关键词：

magnetic nanotubes; phase diagrams;

D O I：

10.1016/j.jmmm.2006.05.019

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Analytical expressions for the total magnetic energy of two characteristic internal configurations of nanometric tubes are calculated. A magnetic phase diagram with respect to the aspect ratio of the tubes is obtained which allows a discussion about the possibility of getting ensembles of nanotubes with low coercive fields. A comparison with recently reported coercive fields of three different cobalt nanotube arrays agrees well with the phase diagram derived here. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：233 / 237

页数：5

共 10 条

[1]

Aharoni A., 1996, Introduction to the Theory of Ferromagnetism

[2]

CASTANO FJ, 2000, PHYS REV B, V69

[3] Direct observation of magnetization reversal processes in micron-sized elements of spin-valve material [J].

Chapman, JN ;

Aitchison, PR ;

Kirk, KJ ;

McVitie, S ;

Kools, JCS ;

Gillies, MF .

JOURNAL OF APPLIED PHYSICS, 1998, 83 (10) :5321-5325

[4] Patterned magnetic nanostructures and quantized magnetic disks [J].

Chou, SY .

PROCEEDINGS OF THE IEEE, 1997, 85 (04) :652-671

[5] Vortex formation in narrow ferromagnetic rings [J].

Kläui, M ;

Vaz, CAF ;

Lopez-Diaz, L ;

Bland, JAC .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2003, 15 (21) :R985-R1023

[6] Scaling relations for magnetic nanoparticles [J].

Landeros, P ;

Escrig, J ;

Altbir, D ;

Laroze, D ;

Castro, JDE ;

Vargas, P .

PHYSICAL REVIEW B, 2005, 71 (09)

[7] Synthesis of cobalt/polymer multilayer nanotubes [J].

Nielsch, K ;

Castaño, FJ ;

Matthias, S ;

Lee, W ;

Ross, CA .

ADVANCED ENGINEERING MATERIALS, 2005, 7 (04) :217-221

[8] Micromagnetic behavior of electrodeposited cylinder arrays [J].

Ross, CA ;

Hwang, M ;

Shima, M ;

Cheng, JY ;

Farhoud, M ;

Savas, TA ;

Smith, HI ;

Schwarzacher, W ;

Ross, FM ;

Redjdal, M ;

Humphrey, FB .

PHYSICAL REVIEW B, 2002, 65 (14) :1-8

[9] Nanotube magnetism [J].

Sui, YC ;

Skomski, R ;

Sorge, KD ;

Sellmyer, DJ .

APPLIED PHYSICS LETTERS, 2004, 84 (09) :1525-1527

[10] High Ku materials approach to 100 Gbits/in2 [J].

Weller, D ;

Moser, A ;

Folks, L ;

Best, ME ;

Lee, W ;

Toney, MF ;

Schwickert, M ;

Thiele, JU ;

Doerner, MF .

IEEE TRANSACTIONS ON MAGNETICS, 2000, 36 (01) :10-15

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