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- 岡 博文
- Max-Planck-Institute of Microstructure Physics
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- OUAZI Safia
- Max-Planck-Institute of Microstructure Physics
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- WEDEKIND Sebastian
- Max-Planck-Institute of Microstructure Physics
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- RODARY Guillemin
- Max-Planck-Institute of Microstructure Physics
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- SANDER Dirk
- Max-Planck-Institute of Microstructure Physics
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- KIRSCHNER Jürgen
- Max-Planck-Institute of Microstructure Physics
書誌事項
- タイトル別名
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- Magnetization Reversal Mechanisms of Co Nanoislands
- Co ナノアイランド ノ ジカ ハンテン メカニズム
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抄録
An outstanding challenging in nanomagnetism is the quantitative understanding of magnetization reversal process of nanostructures. We investigate the magnetization reversal of individual Co islands on Cu(111). We measure switching fields HSW of single Co islands using spin-polarized scanning tunneling microscopy/spectroscopy at 8 K. The switching field changes with island size. The switching field increases with size and reaches a maximum value of 2.4 T at a size of 5500 atoms, and decreases for larger islands. To discuss magnetization reversal processes, we extract the energy barrier ΔE for magnetization reversal as a function of island size. Our analysis reveals a crossover of the magnetization reversal from an exchange-spring behavior to domain wall formation with increasing size at around 7500 atoms.
収録刊行物
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- 表面科学
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表面科学 35 (7), 377-382, 2014
公益社団法人 日本表面科学会
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詳細情報 詳細情報について
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- CRID
- 1390282681436344064
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- NII論文ID
- 130004486912
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- NII書誌ID
- AN00334149
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- ISSN
- 18814743
- 03885321
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- NDL書誌ID
- 025639001
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
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