Current-excited magnetization reversal under in-plane magnetic field in a nanoscaled ferromagnetic wire

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

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

We microscopically demonstrate that the magnetic domain is controllably nucleated and erased in the uniformly magnetized wire using a current pulse in small magnetic fields. Lorentz microscopy is performed in Permalloy nanowires with in-plane anisotropy. The stochastic nature of the magnetization reversal due to spin wave and thermal excitations in the absence of magnetic field completely disappears and turns into deterministic in the presence of small magnetic field, which enables the magnetization reversal control. We interpret that the phenomena are associated with Zeeman energy stabilization.

Original languageEnglish
Article number012505
JournalApplied Physics Letters
Volume92
Issue number1
DOIs
Publication statusPublished - 2008
Externally publishedYes

Fingerprint

wire
magnetization
magnetic fields
wave excitation
Permalloys (trademark)
magnetic domains
magnons
nanowires
stabilization
microscopy
anisotropy
pulses
excitation
energy

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Cite this

Current-excited magnetization reversal under in-plane magnetic field in a nanoscaled ferromagnetic wire. / Togawa, Yoshihiko; Kimura, Takashi; Harada, Ken; Matsuda, Tsuyoshi; Tonomura, Akira; Otani, Yoshichika; Akashi, Tetsuya.

In: Applied Physics Letters, Vol. 92, No. 1, 012505, 2008.

Research output: Contribution to journalArticle

Togawa, Yoshihiko ; Kimura, Takashi ; Harada, Ken ; Matsuda, Tsuyoshi ; Tonomura, Akira ; Otani, Yoshichika ; Akashi, Tetsuya. / Current-excited magnetization reversal under in-plane magnetic field in a nanoscaled ferromagnetic wire. In: Applied Physics Letters. 2008 ; Vol. 92, No. 1.
@article{0792b20f051f403eaec970e744371325,
title = "Current-excited magnetization reversal under in-plane magnetic field in a nanoscaled ferromagnetic wire",
abstract = "We microscopically demonstrate that the magnetic domain is controllably nucleated and erased in the uniformly magnetized wire using a current pulse in small magnetic fields. Lorentz microscopy is performed in Permalloy nanowires with in-plane anisotropy. The stochastic nature of the magnetization reversal due to spin wave and thermal excitations in the absence of magnetic field completely disappears and turns into deterministic in the presence of small magnetic field, which enables the magnetization reversal control. We interpret that the phenomena are associated with Zeeman energy stabilization.",
author = "Yoshihiko Togawa and Takashi Kimura and Ken Harada and Tsuyoshi Matsuda and Akira Tonomura and Yoshichika Otani and Tetsuya Akashi",
year = "2008",
doi = "10.1063/1.2828865",
language = "English",
volume = "92",
journal = "Applied Physics Letters",
issn = "0003-6951",
publisher = "American Institute of Physics Publising LLC",
number = "1",

}

TY - JOUR

T1 - Current-excited magnetization reversal under in-plane magnetic field in a nanoscaled ferromagnetic wire

AU - Togawa, Yoshihiko

AU - Kimura, Takashi

AU - Harada, Ken

AU - Matsuda, Tsuyoshi

AU - Tonomura, Akira

AU - Otani, Yoshichika

AU - Akashi, Tetsuya

PY - 2008

Y1 - 2008

N2 - We microscopically demonstrate that the magnetic domain is controllably nucleated and erased in the uniformly magnetized wire using a current pulse in small magnetic fields. Lorentz microscopy is performed in Permalloy nanowires with in-plane anisotropy. The stochastic nature of the magnetization reversal due to spin wave and thermal excitations in the absence of magnetic field completely disappears and turns into deterministic in the presence of small magnetic field, which enables the magnetization reversal control. We interpret that the phenomena are associated with Zeeman energy stabilization.

AB - We microscopically demonstrate that the magnetic domain is controllably nucleated and erased in the uniformly magnetized wire using a current pulse in small magnetic fields. Lorentz microscopy is performed in Permalloy nanowires with in-plane anisotropy. The stochastic nature of the magnetization reversal due to spin wave and thermal excitations in the absence of magnetic field completely disappears and turns into deterministic in the presence of small magnetic field, which enables the magnetization reversal control. We interpret that the phenomena are associated with Zeeman energy stabilization.

UR - http://www.scopus.com/inward/record.url?scp=38049045492&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=38049045492&partnerID=8YFLogxK

U2 - 10.1063/1.2828865

DO - 10.1063/1.2828865

M3 - Article

VL - 92

JO - Applied Physics Letters

JF - Applied Physics Letters

SN - 0003-6951

IS - 1

M1 - 012505

ER -