Magnetic cylindrical nanowires with single modulated diameter

被引：27

作者：

Allende, S. ^{[1
,2
,3
]}

Altbir, D. ^{[2
,3
]}

Nielsch, K. ^{[4
]}

机构：

[1] Univ Chile, Dept Fis, FCFM, Santiago, Chile

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

[3] Ctr Dev Nanosci & Nanotechnol, Santiago, Chile

[4] Univ Hamburg, Inst Appl Phys, D-20355 Hamburg, Germany

来源：

PHYSICAL REVIEW B | 2009年 / 80卷 / 17期

关键词：

interface magnetism; magnetic domain walls; magnetic hysteresis; nanowires; nucleation; NICKEL NANOWIRES; DYNAMICS; ANODIZATION; SIMULATION; REVERSAL; WALLS; WIRES;

D O I：

10.1103/PhysRevB.80.174402

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Nucleation and propagation of a domain wall along a modulated wire as a function of its geometry has been investigated. In all the cases, nucleation began at the thicker section and propagated toward the thinner section, regardless of the reversal mode. At the interface, the wall was pinned and a higher nucleation field was required to continue the propagation of the wall. This behavior led to the existence of two nucleation fields along each branch of the hysteresis curve.

引用

页数：5

共 28 条

[1] Submicrometer ferromagnetic NOT gate and shift register [J].

Allwood, DA ;

Xiong, G ;

Cooke, MD ;

Faulkner, CC ;

Atkinson, D ;

Vernier, N ;

Cowburn, RP .

SCIENCE, 2002, 296 (5575) :2003-2006

[2] Magnetic domain-wall dynamics in a submicrometre ferromagnetic structure [J].

Atkinson, D ;

Allwood, DA ;

Xiong, G ;

Cooke, MD ;

Faulkner, CC ;

Cowburn, RP .

NATURE MATERIALS, 2003, 2 (02) :85-87

[3] Reversal modes in arrays of interacting magnetic Ni nanowires: Monte Carlo simulations and scaling technique [J].

Bahiana, M. ;

Amaral, F. S. ;

Allende, S. ;

Altbir, D. .

PHYSICAL REVIEW B, 2006, 74 (17)

[4]

Binder K., 2002, Monte Carlo Simulation in Statistical Physics

[5] Scaling approach to the magnetic phase diagram of nanosized systems [J].

Castro, JDE ;

Altbir, D ;

Retamal, JC ;

Vargas, P .

PHYSICAL REVIEW LETTERS, 2002, 88 (23) :2372021-2372024

[6] Micromagnetic simulation of domain wall motion in magnetic nano-wires [J].

Forster, H ;

Schrefl, T ;

Scholz, W ;

Suess, D ;

Tsiantos, V ;

Fidler, J .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2002, 249 (1-2) :181-186

[7] Ultrafast precessional magnetization reversal by picosecond magnetic field pulse shaping [J].

Gerrits, T ;

van den Berg, HAM ;

Hohlfeld, J ;

Bär, L ;

Rasing, T .

NATURE, 2002, 418 (6897) :509-512

[8] Dependence of current and field driven depinning of domain walls on their structure and chirality in permalloy nanowires [J].

Hayashi, Masamitsu ;

Thomas, Luc ;

Rettner, Charles ;

Moriya, Rai ;

Jiang, Xin ;

Parkin, Stuart S. P. .

PHYSICAL REVIEW LETTERS, 2006, 97 (20)

[9] Magnetization reversal dynamics in nickel nanowires [J].

Hertel, R ;

Kirschner, J .

PHYSICA B-CONDENSED MATTER, 2004, 343 (1-4) :206-210

[10] Computational micromagnetism of magnetization processes in nickel nanowires [J].

Hertel, R .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2002, 249 (1-2) :251-256

← 1 2 3 →