Estimating the Spatial Distribution of Ca Dopants in α-SiAlON by Statistical Analysis of HAADF-STEM Image
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- Sakaguchi Norihito
- Faculty of Engineering, Hokkaido University
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- Yamaki Fuuta
- Faculty of Engineering, Hokkaido University
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- Saito Genki
- Faculty of Engineering, Hokkaido University
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- Kunisada Yuji
- Faculty of Engineering, Hokkaido University
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<p>We analyzed the spatial distribution of Ca dopants in α-SiAlON by using a statistical approach that analyzed a high-angle annular dark-field (HAADF) scanning transmission electron microscopy (STEM) image. By evaluating the image intensity of each atomic column, we found that the intensity deviation of columns with Ca atoms was twice that of other atomic columns. The results of HAADF-STEM image simulation suggested that there was a long-range repulsive interaction along the [0001] direction between pairs of Ca atoms in the same Ca column. Moreover, correlation of image intensities in neighboring Ca columns suggested the existence of a short-range repulsive force between first-nearest-neighbor Ca atoms. The origin of such anisotropic interactions between pairs of Ca atoms will be discussed.</p>
収録刊行物
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- MATERIALS TRANSACTIONS
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MATERIALS TRANSACTIONS 58 (10), 1341-1345, 2017
公益社団法人 日本金属学会
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詳細情報 詳細情報について
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- CRID
- 1390282679231116416
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- NII論文ID
- 130006096691
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- NII書誌ID
- AA1151294X
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- ISSN
- 13475320
- 13459678
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- NDL書誌ID
- 028534535
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
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- CiNii Articles
- KAKEN
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- 使用不可