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Surface nanostructures on Nb-doped SrTiO3 irradiated with swift heavy ions at grazing incidence
https://repo.qst.go.jp/records/85843
https://repo.qst.go.jp/records/858436808e9c5-96ab-483f-bb0f-e85bd1081de9
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2022-03-22 | |||||
| タイトル | ||||||
| タイトル | Surface nanostructures on Nb-doped SrTiO3 irradiated with swift heavy ions at grazing incidence | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | journal article | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
Ishikawa, N.
× Ishikawa, N.× Fujimura, Y.× Kondo, K.× L. Szabo, G.× A. Wilhelm, R.× Ogawa, H.× Tomitsugu, Taguchi× Tomitsugu, Taguchi |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | A single crystal of SrTiO3 doped with 0.5 wt% niobium (Nb-STO) was irradiated with 200 MeV Au32+ ions at grazing incidence to characterize the irradiation-induced hillock chains. Exactly the same hillock chains are observed by using atomic force microscopy (AFM) and scanning electron microscopy (SEM) to study the relation between irradiation-induced change of surface topography and corresponding material property changes. As expected, multiple hillocks as high as 5–6 nm are imaged by AFM observation in tapping mode. It is also found that the regions in between the adjacent hillocks are not depressed, and in many cases they are slightly elevated. Line-like contrasts along the ion paths are found in both AFM phase images and SEM images, indicating the formation of continuous ion tracks in addition to multiple hillocks. Validity of preexisting models for explaining the hillock chain formation is discussed based on the present results. In order to obtain new insights related to the ion track formation, cross-sectional transmission electron microscopy (TEM) observation was performed. The ion tracks in the nearsurface region are found to be relatively large, whereas buried ion tracks in the deeper region are relatively small. The results suggest that recrystallization plays an important role in the formation of small ion tracks in the deep region, whereas formation of large ion tracks in the near-surface region is likely due to the absence of recrystallization. TEM images also show shape deformation of ion tracks in the near-surface region, suggesting that material transport towards the surface is the reason for the absence of recrystallization. |
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| 書誌情報 |
Nanotechnology 巻 33, 号 23, p. 235303-1-235303-10, 発行日 2022-02 |
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| 出版者 | ||||||
| 出版者 | IOP publishing | |||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0957-4484 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | https://doi.org/10.1088/1361-6528/ac58a5 | |||||
| 関連サイト | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | https://iopscience.iop.org/article/10.1088/1361-6528/ac58a5 | |||||
