Electronic active defects and local order in doped ZnO ceramics inferred from EPR and Al-27 NMR investigations
文献类型：期刊论文
| 作者 | Sun, Qianying; Tian, Tian; Zheng, Laoying; Man, Zhenyong; Li, Guorong; Barre, Maud; Dittmer, Jens; Bulou, Alain; Kassiba, Abdel Hadi |
| 刊名 | JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
 |
| 出版日期 | 2019-08-01 |
| 卷号 | 39期号:10页码:3070 |
| 关键词 | ZnO ceramics Doping EPR NMR Conductivity |
| ISSN号 | 0955-2219 |
| DOI | 10.1016/j.jeurceramsoc.2019.04.024 |
| 文献子类 | Article |
| 英文摘要 | Doped ZnO based ceramics were fabricated by using a solid state reaction of ZnO co-doped by TiO2, Al2O3 and MgO and sintered in different atmospheres (Air, N-2, N-2 + CO). The crystalline structures consist in wurtzite ZnO and a minor spinel phase Zn2TiO4. The electrical conductivity is modulated by the sintering conditions with the highest value ((similar to)10(5) S m(-1)) obtained in the reducing atmosphere (N-2 + CO). The role of defects and vacancies on the electrical behavior was exhaustively investigated by Raman, electron paramagnetic resonance (EPR) and solid state NMR methods. The paramagnetic centres inferred from EPR studies show a Pauli-like spin susceptibility. Their origin was assigned to shallow donors from interstitial defects (Zn-i) favored by substitutional Al ions (Al-zn). The NMR spectral features with a characteristic 185 ppm line which correlates with the electrical conductivity are presumed to be caused by the Knight shift effect from the conduction electrons and the involved paramagnetic centres. |
| WOS研究方向 | Materials Science |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCI LTD |
| 源URL | [http://ir.sic.ac.cn/handle/331005/26953]  |
| 专题 | 中国科学院上海硅酸盐研究所 |
| 推荐引用方式 GB/T 7714 | Sun, Qianying,Tian, Tian,Zheng, Laoying,et al. Electronic active defects and local order in doped ZnO ceramics inferred from EPR and Al-27 NMR investigations[J]. JOURNAL OF THE EUROPEAN CERAMIC SOCIETY,2019,39(10):3070. |
| APA | Sun, Qianying.,Tian, Tian.,Zheng, Laoying.,Man, Zhenyong.,Li, Guorong.,...&Kassiba, Abdel Hadi.(2019).Electronic active defects and local order in doped ZnO ceramics inferred from EPR and Al-27 NMR investigations.JOURNAL OF THE EUROPEAN CERAMIC SOCIETY,39(10),3070. |
| MLA | Sun, Qianying,et al."Electronic active defects and local order in doped ZnO ceramics inferred from EPR and Al-27 NMR investigations".JOURNAL OF THE EUROPEAN CERAMIC SOCIETY 39.10(2019):3070. |
入库方式： OAI收割
来源：上海硅酸盐研究所
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