Analysis of Magnetic Relaxation with Pre-Existing Nucleation Sites Based on the Fatuzzo-Labrune Model

Duy Truong Quach; Djati Handoko; Sang Hyuk Lee; Je Ho Shim; The Long Phan; Duc Thang Pham; Kyung Min Lee; Jong Ryul Jeong; Duc The Ngo; Dong Hyun Kim

doi:10.1109/TMAG.2015.2443855

Analysis of Magnetic Relaxation with Pre-Existing Nucleation Sites Based on the Fatuzzo-Labrune Model

Duy Truong Quach, Djati Handoko, Sang Hyuk Lee, Je Ho Shim, The Long Phan, Duc Thang Pham, Kyung Min Lee, Jong Ryul Jeong, Duc The Ngo, Dong Hyun Kim

Department of Physics

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

Abstract

Time-resolved magnetic domain patterns of (Co/Pt) and (CoFeB/Pd) multi-layers with a perpendicular magnetic anisotropy are observed by means of magneto-optical microscopy, from which magnetic relaxation curves are determined via a quantitative image analysis. Interestingly, it has been observed that the relaxation processes starting with pre-existing nucleation sites, as well as starting from a fully saturated state, are well explained based on the Fatuzzo-Labrune model, although the pre-existing nucleation sites significantly modify the magnetization reversal behaviors.

Original language	English
Article number	7120979
Journal	IEEE Transactions on Magnetics
Volume	51
Issue number	11
DOIs	https://doi.org/10.1109/TMAG.2015.2443855
Publication status	Published - 1 Nov 2015

Keywords

Fatuzzo-Labrune model
magnetization reversal mechanism
pre-existing nucleation sites
relaxation process

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10.1109/TMAG.2015.2443855

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title = "Analysis of Magnetic Relaxation with Pre-Existing Nucleation Sites Based on the Fatuzzo-Labrune Model",

abstract = "Time-resolved magnetic domain patterns of (Co/Pt) and (CoFeB/Pd) multi-layers with a perpendicular magnetic anisotropy are observed by means of magneto-optical microscopy, from which magnetic relaxation curves are determined via a quantitative image analysis. Interestingly, it has been observed that the relaxation processes starting with pre-existing nucleation sites, as well as starting from a fully saturated state, are well explained based on the Fatuzzo-Labrune model, although the pre-existing nucleation sites significantly modify the magnetization reversal behaviors.",

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AU - Shim, Je Ho

AU - Phan, The Long

AU - Pham, Duc Thang

AU - Lee, Kyung Min

AU - Jeong, Jong Ryul

AU - Ngo, Duc The

AU - Kim, Dong Hyun

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N2 - Time-resolved magnetic domain patterns of (Co/Pt) and (CoFeB/Pd) multi-layers with a perpendicular magnetic anisotropy are observed by means of magneto-optical microscopy, from which magnetic relaxation curves are determined via a quantitative image analysis. Interestingly, it has been observed that the relaxation processes starting with pre-existing nucleation sites, as well as starting from a fully saturated state, are well explained based on the Fatuzzo-Labrune model, although the pre-existing nucleation sites significantly modify the magnetization reversal behaviors.

AB - Time-resolved magnetic domain patterns of (Co/Pt) and (CoFeB/Pd) multi-layers with a perpendicular magnetic anisotropy are observed by means of magneto-optical microscopy, from which magnetic relaxation curves are determined via a quantitative image analysis. Interestingly, it has been observed that the relaxation processes starting with pre-existing nucleation sites, as well as starting from a fully saturated state, are well explained based on the Fatuzzo-Labrune model, although the pre-existing nucleation sites significantly modify the magnetization reversal behaviors.

KW - Fatuzzo-Labrune model

KW - magnetization reversal mechanism

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KW - relaxation process

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Analysis of Magnetic Relaxation with Pre-Existing Nucleation Sites Based on the Fatuzzo-Labrune Model

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