Domain nucleation and annihilation in uniformly magnetized state under current pulses in narrow ferromagnetic wires

Yoshihiko Togawa; Takashi Kimura; Ken Harada; Tetsuya Akashi; Tsuyoshi Matsuda; Akira Tonomura; Yoshichika Otani

doi:10.1143/JJAP.45.L1322

Domain nucleation and annihilation in uniformly magnetized state under current pulses in narrow ferromagnetic wires

Yoshihiko Togawa, Takashi Kimura, Ken Harada, Tetsuya Akashi, Tsuyoshi Matsuda, Akira Tonomura, Yoshichika Otani

Research output: Contribution to journal › Article › peer-review

25 Citations (Scopus)

Abstract

We investigate the current-driven magnetization dynamics in narrow Permalloy wires by means of Lorentz microscopy and electron holography. Current pulses are found to transform the magnetic structure in the uniformly magnetized state below the Curie temperature. A variety of magnetic states including reversed magnetic domains are randomly obtained in low probability. The dynamics of vortices found in most of observed magnetic states seems to play a key role in triggering the magnetization reversal.

Original language	English
Pages (from-to)	L1322-L1324
Journal	Japanese Journal of Applied Physics
Volume	45
Issue number	46-50
DOIs	https://doi.org/10.1143/JJAP.45.L1322
Publication status	Published - Dec 2006
Externally published	Yes

All Science Journal Classification (ASJC) codes

Engineering(all)
Physics and Astronomy(all)

Access to Document

10.1143/JJAP.45.L1322

Cite this

@article{ab9bb521bbfd490aabb7081052479686,

title = "Domain nucleation and annihilation in uniformly magnetized state under current pulses in narrow ferromagnetic wires",

abstract = "We investigate the current-driven magnetization dynamics in narrow Permalloy wires by means of Lorentz microscopy and electron holography. Current pulses are found to transform the magnetic structure in the uniformly magnetized state below the Curie temperature. A variety of magnetic states including reversed magnetic domains are randomly obtained in low probability. The dynamics of vortices found in most of observed magnetic states seems to play a key role in triggering the magnetization reversal.",

author = "Yoshihiko Togawa and Takashi Kimura and Ken Harada and Tetsuya Akashi and Tsuyoshi Matsuda and Akira Tonomura and Yoshichika Otani",

year = "2006",

month = dec,

doi = "10.1143/JJAP.45.L1322",

language = "English",

volume = "45",

pages = "L1322--L1324",

journal = "Japanese Journal of Applied Physics",

issn = "0021-4922",

publisher = "The Japan Society of Applied Physics",

number = "46-50",

}

TY - JOUR

T1 - Domain nucleation and annihilation in uniformly magnetized state under current pulses in narrow ferromagnetic wires

AU - Togawa, Yoshihiko

AU - Kimura, Takashi

AU - Harada, Ken

AU - Akashi, Tetsuya

AU - Matsuda, Tsuyoshi

AU - Tonomura, Akira

AU - Otani, Yoshichika

PY - 2006/12

Y1 - 2006/12

N2 - We investigate the current-driven magnetization dynamics in narrow Permalloy wires by means of Lorentz microscopy and electron holography. Current pulses are found to transform the magnetic structure in the uniformly magnetized state below the Curie temperature. A variety of magnetic states including reversed magnetic domains are randomly obtained in low probability. The dynamics of vortices found in most of observed magnetic states seems to play a key role in triggering the magnetization reversal.

AB - We investigate the current-driven magnetization dynamics in narrow Permalloy wires by means of Lorentz microscopy and electron holography. Current pulses are found to transform the magnetic structure in the uniformly magnetized state below the Curie temperature. A variety of magnetic states including reversed magnetic domains are randomly obtained in low probability. The dynamics of vortices found in most of observed magnetic states seems to play a key role in triggering the magnetization reversal.

UR - http://www.scopus.com/inward/record.url?scp=34547212316&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=34547212316&partnerID=8YFLogxK

U2 - 10.1143/JJAP.45.L1322

DO - 10.1143/JJAP.45.L1322

M3 - Article

AN - SCOPUS:34547212316

SN - 0021-4922

VL - 45

SP - L1322-L1324

JO - Japanese Journal of Applied Physics

JF - Japanese Journal of Applied Physics

IS - 46-50

ER -

Domain nucleation and annihilation in uniformly magnetized state under current pulses in narrow ferromagnetic wires

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this