Magnetic force microscopy study of microwave-assisted magnetization reversal in submicron-scale ferromagnetic particles

Y. Nozaki; M. Ohta; S. Taharazako; K. Tateishi; S. Yoshimura; K. Matsuyama

doi:10.1063/1.2775047

Magnetic force microscopy study of microwave-assisted magnetization reversal in submicron-scale ferromagnetic particles

Y. Nozaki, M. Ohta, S. Taharazako, K. Tateishi, S. Yoshimura, K. Matsuyama

Electronic Devices

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

88 Citations (Scopus)

Abstract

Changes in magnetic-domain configurations caused by the application of radio-frequency (rf) fields ranging from 3 to 18 GHz were observed using magnetic force microscope. rf fields barely altered the magnetization of Co particles with scattered large crystalline anisotropy; however, for NiFe particles, magnetization switching occurred when the rf approached the natural ferromagnetic-resonance frequency of 5.92 GHz. However, the reduction of the switching field fluctuated widely among the particles. Scattering of the effective energy barrier to thermal fluctuations caused by an applied rf field can explain the stochastic switching properties.

Original language	English
Article number	082510
Journal	Applied Physics Letters
Volume	91
Issue number	8
DOIs	https://doi.org/10.1063/1.2775047
Publication status	Published - 2007

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

Access to Document

10.1063/1.2775047

Cite this

@article{bd8823a31aae4ec99764c4f124978e54,

title = "Magnetic force microscopy study of microwave-assisted magnetization reversal in submicron-scale ferromagnetic particles",

abstract = "Changes in magnetic-domain configurations caused by the application of radio-frequency (rf) fields ranging from 3 to 18 GHz were observed using magnetic force microscope. rf fields barely altered the magnetization of Co particles with scattered large crystalline anisotropy; however, for NiFe particles, magnetization switching occurred when the rf approached the natural ferromagnetic-resonance frequency of 5.92 GHz. However, the reduction of the switching field fluctuated widely among the particles. Scattering of the effective energy barrier to thermal fluctuations caused by an applied rf field can explain the stochastic switching properties.",

author = "Y. Nozaki and M. Ohta and S. Taharazako and K. Tateishi and S. Yoshimura and K. Matsuyama",

note = "Funding Information: This study was supported by the Industrial Technology Research Grant Program in 2005 from the New Energy and Industrial Technology Development Organization (NEDO) of Japan.",

year = "2007",

doi = "10.1063/1.2775047",

language = "English",

volume = "91",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics Publising LLC",

number = "8",

}

TY - JOUR

T1 - Magnetic force microscopy study of microwave-assisted magnetization reversal in submicron-scale ferromagnetic particles

AU - Nozaki, Y.

AU - Ohta, M.

AU - Taharazako, S.

AU - Tateishi, K.

AU - Yoshimura, S.

AU - Matsuyama, K.

N1 - Funding Information: This study was supported by the Industrial Technology Research Grant Program in 2005 from the New Energy and Industrial Technology Development Organization (NEDO) of Japan.

PY - 2007

Y1 - 2007

N2 - Changes in magnetic-domain configurations caused by the application of radio-frequency (rf) fields ranging from 3 to 18 GHz were observed using magnetic force microscope. rf fields barely altered the magnetization of Co particles with scattered large crystalline anisotropy; however, for NiFe particles, magnetization switching occurred when the rf approached the natural ferromagnetic-resonance frequency of 5.92 GHz. However, the reduction of the switching field fluctuated widely among the particles. Scattering of the effective energy barrier to thermal fluctuations caused by an applied rf field can explain the stochastic switching properties.

AB - Changes in magnetic-domain configurations caused by the application of radio-frequency (rf) fields ranging from 3 to 18 GHz were observed using magnetic force microscope. rf fields barely altered the magnetization of Co particles with scattered large crystalline anisotropy; however, for NiFe particles, magnetization switching occurred when the rf approached the natural ferromagnetic-resonance frequency of 5.92 GHz. However, the reduction of the switching field fluctuated widely among the particles. Scattering of the effective energy barrier to thermal fluctuations caused by an applied rf field can explain the stochastic switching properties.

UR - http://www.scopus.com/inward/record.url?scp=34548246622&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=34548246622&partnerID=8YFLogxK

U2 - 10.1063/1.2775047

DO - 10.1063/1.2775047

M3 - Article

AN - SCOPUS:34548246622

SN - 0003-6951

VL - 91

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 8

M1 - 082510

ER -

Magnetic force microscopy study of microwave-assisted magnetization reversal in submicron-scale ferromagnetic particles

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this