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Vacancy-induced ferromagnetism in ZnO probed by spin-polarized positron annihilation spectroscopy
https://repo.qst.go.jp/records/48719
https://repo.qst.go.jp/records/487198f878373-ab06-4efd-a977-6e93e178bf28
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2018-04-12 | |||||
| タイトル | ||||||
| タイトル | Vacancy-induced ferromagnetism in ZnO probed by spin-polarized positron annihilation spectroscopy | |||||
| 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 |
前川, 雅樹
× 前川, 雅樹× 阿部, 浩之× 宮下, 敦巳× 境, 誠司× 山本, 春也× 河裾, 厚男× 前川 雅樹× 阿部 浩之× 宮下 敦巳× 境 誠司× 山本 春也× 河裾 厚男 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | We investigated ferromagnetism of ZnO induced by oxygen implantation using spin-polarized positron annihilation spectroscopy together with magnetization measurements. The magnetization measurements showed appearance of ferromagnetism after oxygen implantation and its disappearance during post-implantation annealing at above 573 K. The Doppler broadening of annihilation radiation (DBAR) spectrum showed asymmetry upon field reversal after the oxygen-implantation. The obtained differential DBAR spectrum between positive and negative magnetic fields was well-explained with a theoretical calculation considering zinc vacancies. The disappearance of field reversal asymmetry of DBAR spectrum by annealing agreed with that of ferromagnetism observed by magnetization measurements. These suggest that the radiation-induced zinc vacancies are the source for the observed ferromagnetism of ZnO. | |||||
| 書誌情報 |
Applied Physics Letters 巻 110, 号 17, p. 172402-1-172402-5, 発行日 2017-04 |
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| 出版者 | ||||||
| 出版者 | AIP Publishing | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1063/1.4979696 | |||||
| 関連サイト | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | http://dx.doi.org/10.1063/1.4979696 | |||||
| 関連名称 | http://dx.doi.org/10.1063/1.4979696 | |||||
