Magnetic force microscopic study on domain-wall molecules in NiFe nano rings

Kohei Sasage; Naoya Okamoto; Hana Tsujikawa; Takehiro Yamaoka; Eiji Saitoh

doi:10.4028/www.scientific.net/SSP.152-153.529

Magnetic force microscopic study on domain-wall molecules in NiFe nano rings

Kohei Sasage, Naoya Okamoto, Hana Tsujikawa, Takehiro Yamaoka, Eiji Saitoh

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

A pair of magnetic domain walls (DWs) in ferromagnetic NiFe rings has been investigated in terms of the magnetic force microscopy (MFM). When the distance between the rings d is greater than a threshold value d_th, MFM signals indicate that a DW in the ring is dragged due to a stray magnetic field from an MFM probe tip. When d < d_th, this drag signals disappears; DWs are bound to each other by the DW-DW interaction. This transition can be argued in terms of the competition between the DW-DW magnetostatic interaction and the DW-drag potential. From the d-dependent MFM data, the DW-drag potential was estimated.

Original language	English
Title of host publication	Magnetism and Magnetic Materials
Publisher	Trans Tech Publications Ltd
Pages	529-532
Number of pages	4
ISBN (Print)	390845168X, 9783908451686
DOIs	https://doi.org/10.4028/www.scientific.net/SSP.152-153.529
Publication status	Published - 2009 Jan 1
Externally published	Yes
Event	Forth Moscow International Symposium on Magnetism MISM2008 - Moscow, Russian Federation Duration: 2008 Jun 20 → 2008 Jun 25

Publication series

Name	Solid State Phenomena
Volume	152-153
ISSN (Print)	1012-0394

Other

Other	Forth Moscow International Symposium on Magnetism MISM2008
Country	Russian Federation
City	Moscow
Period	08/6/20 → 08/6/25

Keywords

Dw drag
Dw molecule
Magnetic force microscopy
Micro magnetic simulation
Single magnetic domain wall (dw)

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Materials Science(all)
Condensed Matter Physics

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Sasage, K, Okamoto, N, Tsujikawa, H, Yamaoka, T & Saitoh, E 2009, Magnetic force microscopic study on domain-wall molecules in NiFe nano rings. in Magnetism and Magnetic Materials. Solid State Phenomena, vol. 152-153, Trans Tech Publications Ltd, pp. 529-532, Forth Moscow International Symposium on Magnetism MISM2008, Moscow, Russian Federation, 08/6/20. https://doi.org/10.4028/www.scientific.net/SSP.152-153.529

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abstract = "A pair of magnetic domain walls (DWs) in ferromagnetic NiFe rings has been investigated in terms of the magnetic force microscopy (MFM). When the distance between the rings d is greater than a threshold value dth, MFM signals indicate that a DW in the ring is dragged due to a stray magnetic field from an MFM probe tip. When d < dth, this drag signals disappears; DWs are bound to each other by the DW-DW interaction. This transition can be argued in terms of the competition between the DW-DW magnetostatic interaction and the DW-drag potential. From the d-dependent MFM data, the DW-drag potential was estimated.",

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