Resistivity noise in crystalline magnetic nanowires and its implications to domain formation and kinetics

被引：6

作者：

Singh, Amrita ^{[1
]}

Chowdhury, Debtosh ^{[1
]}

Ghosh, Arindam ^{[1
]}

机构：

[1] Indian Inst Sci, Dept Phys, Bangalore 560012, Karnataka, India

来源：

APPLIED PHYSICS LETTERS | 2009年 / 95卷 / 09期

关键词：

ELECTRICAL NOISE; DIFFUSION; FLUCTUATIONS; DYNAMICS; NI;

D O I：

10.1063/1.3212872

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have investigated the time-dependent fluctuations in electrical resistance, or noise, in high-quality crystalline magnetic nanowires within nanoporous templates. The noise increases exponentially with increasing temperature and magnetic field, and has been analyzed in terms of domain wall depinning within the Neel-Brown framework. The frequency-dependence of noise also indicates a crossover from nondiffusive kinetics to long-range diffusion at higher temperatures, as well as a strong collective depinning, which need to be considered when implementing these nanowires in magnetoelectronic devices. (C) 2009 American Institute of Physics. [DOI: 10.1063/1.3212872]

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页数：3

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共 33 条

[21]

KUMAR S, 2006, PHYS REV B, V73

[22] Observation of thermally activated domain wall transformations -: art. no. 052507 [J].

Laufenberg, M ;

Backes, D ;

Bührer, W ;

Bedau, D ;

Kläui, M ;

Rüdiger, U ;

Vaz, CAF ;

Bland, JAC ;

Heyderman, LJ ;

Nolting, F ;

Cherifi, S ;

Locatelli, A ;

Belkhou, R ;

Heun, S ;

Bauer, E .

APPLIED PHYSICS LETTERS, 2006, 88 (05) :1-3

[23] Probing vortex-core dynamics using current-induced resonant excitation of a trapped domain wall [J].

Moriya, Rai ;

Thomas, Luc ;

Hayashi, Masamitsu ;

Bazaliy, Yaroslaw B. ;

Rettner, Charles ;

Parkin, Stuart S. P. .

NATURE PHYSICS, 2008, 4 (05) :368-372

[24]

MOTADIR Z, 2007, APPL PHYS LETT, V90

[25] Hexagonally ordered 100 nm period nickel nanowire arrays [J].

Nielsch, K ;

Wehrspohn, RB ;

Barthel, J ;

Kirschner, J ;

Gösele, U ;

Fischer, SF ;

Kronmüller, H .

APPLIED PHYSICS LETTERS, 2001, 79 (09) :1360-1362

[26] Noise in small magnetic systems - applications to very sensitive magnetoresistive sensors [J].

Pannetier, M ;

Fermon, C ;

Le Goff, G ;

Simola, J ;

Kerr, E ;

Coey, JMD .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2005, 290 :1158-1160

[27] Magnetic domain-wall racetrack memory [J].

Parkin, Stuart S. P. ;

Hayashi, Masamitsu ;

Thomas, Luc .

SCIENCE, 2008, 320 (5873) :190-194

[28] Analysis of magnetic interaction in Ni nanowire array grown using electrodeposition process [J].

Rahman, IZ ;

Boboc, A ;

Razeeb, KM ;

Rahman, MA .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2005, 290 :246-249

[29] Nanometer scale observation of high efficiency thermally assisted current-driven domain wall depinning [J].

Ravelosona, D ;

Lacour, D ;

Katine, JA ;

Terris, BD ;

Chappert, C .

PHYSICAL REVIEW LETTERS, 2005, 95 (11)

[30] FRACTAL DOMAIN-STRUCTURES IN THIN AMORPHOUS FILMS [J].

SAYKO, GV ;

ZVEZDIN, AK ;

POKHIL, TG ;

VVEDENSKY, BS ;

NIKOLAEV, EN .

IEEE TRANSACTIONS ON MAGNETICS, 1992, 28 (05) :2931-2933

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