Correlation between Switching Field and Microstructure of Individual Co/Pt Dots
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<jats:p>The correlation between the microstructure and the magnetization switching field of individual Co/Pt multilayer nanodots with Pt or Ta/Pt underlayers has been investigated by transmission electron microscopy and magnetic force microscopy. The insertion of a 2-nm-thick Ta underlayer promoted the Co/Pt [111] crystal axis orientation and improved the mean switching field and the switching field distribution of nanodot arrays with a diameter of 70 nm from 1.4 to 6.9 kOe and from 22 to 8%, respectively. Electron microscopy of individual dots has revealed that all the nanodots without the Ta layer contain (200)-oriented grains, which possibly work as nucleation sites owing to a small perpendicular magnetic anisotropy. However, no structural difference is found among the dots having the same underlayers, suggesting the existence of other factors affecting the switching field distribution.</jats:p>
収録刊行物
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- Japanese journal of applied physics : JJAP
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Japanese journal of applied physics : JJAP 51 (10), 103002-, 2012-10
Tokyo : The Japan Society of Applied Physics
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詳細情報 詳細情報について
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- CRID
- 1520853832295832960
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- NII論文ID
- 40019455772
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- NII書誌ID
- AA12295836
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- ISSN
- 00214922
- 13474065
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- NDL書誌ID
- 024026206
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- 本文言語コード
- en
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- NDL 雑誌分類
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- ZM35(科学技術--物理学)
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- データソース種別
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- NDL
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