書誌事項
- タイトル別名
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- Anomalous Elastic Softening in Superlattice Thin Films Studied by Picosecond-Laser Ultrasounds and Micromechanics Modeling
- チョウコウシ ハクマク ニ オケル イジョウ ダンセイ ナンカ ゲンショウ ノ メカニズム ピコビョウ レーザー チョウオンパ ニ ヨル ダンセイ テイスウ ソクテイ ト マイクロメカニックス カイセキ
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説明
In this study, we observed anomalous softening in elasticity of Co/Pt superlattice thin films by measuring the out-of-plane elastic constant using the picosecond laser ultrasounds. It showed correlation with the strain energy of Co and Pt layers; as the strain energy increased, the elastic constant was lowered. In Co/Pt superlattice, the strain of each layer becomes more than 0.01 because of 10.7% lattice misfit at the interfaces, which will be partially released by occurrence of noncohesive-bonding regions. We consider that as the strain energy increases, the volume fraction of the noncohesive-bonding region increases, and the elastic constant is lowered. This view is supported by the micromechanics calculation.
収録刊行物
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- 材料
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材料 56 (10), 900-906, 2007
公益社団法人 日本材料学会
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詳細情報 詳細情報について
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- CRID
- 1390001205419122688
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- NII論文ID
- 130002085981
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- NII書誌ID
- AN00096175
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- ISSN
- 18807488
- 05145163
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- NDL書誌ID
- 8976689
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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サーチ
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