Intervalence charge transfer transition of Co2+-Ti4+ ion pair in α-Al2O3:Co,Ti crystal
文献类型：期刊论文
| 作者 | Han, Xiaozhen1,2; Feng, Xiqi3; Kang, Yan4; Guo, Shouguo1; Li, Yongsheng5 |
| 刊名 | Journal of Alloys and Compounds
 |
| 出版日期 | 2018 |
| 卷号 | 768页码:1058-1063 |
| ISSN号 | 09258388 |
| DOI | 10.1016/j.jallcom.2018.07.314 |
| 英文摘要 | A new optical absorption band centered at 356 nm was observed in Co/Ti co-doped synthetic corundum in ultraviolet (UV) region while it doesn't exist in corundum single doped with cobalt or titanium. It is featured with high optical absorption intensity, full width at half maxima (FWHM, greater than 3000 cm−1), strong polarization along the metal ion-metal ion direction, which is consistent with the optical characteristics of intervalence charge transfer transition (IVCT). We propose that the 356 nm absorption band is generated by IVCT of Co2+-Ti4+ heteronuclear ion pair whose formation mechanism would be discussed briefly in this paper. Co2+-Ti4+ was found for the first time in corundum and is the second heteronuclear ion pair discovered in corundum in addition to the known Fe2+-Ti4+. © 2018 Elsevier B.V. |
| 出版者 | Elsevier Ltd |
| 源URL | [http://ir.sic.ac.cn/handle/331005/25180]  |
| 专题 | 中国科学院上海硅酸盐研究所 |
| 作者单位 | 1.Gemstone Testing Center, East China University of Science & Technology, No. 130, Meilong Road, Xuhui District, Shanghai; 200237, China; 2.Jewelry College, Shanghai Jian Qiao University, No. 1111, Huchenghuan Road, Pudong New District, Shanghai; 201306, China; 3.Key Laboratory of Transparent and Opto-functional Inorganic Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, No. 1295, Dingxi Road, Changning District, Shanghai; 200050, China; 4.Research Center of Analysis and Test, East China University of Science & Technology, No. 130, Meilong Road, Xuhui District, Shanghai; 200237, China; 5.Lab of Low-Dimensional Materials Chemistry, School of Materials Science and Engineering, Key Laboratory for Ultrafine Materials of Ministry of Education, East China University of Science and Technology, No. 130, Meilong Road, Xuhui District, Shanghai; 200237, China |
| 推荐引用方式 GB/T 7714 | Han, Xiaozhen,Feng, Xiqi,Kang, Yan,et al. Intervalence charge transfer transition of Co2+-Ti4+ ion pair in α-Al2O3:Co,Ti crystal[J]. Journal of Alloys and Compounds,2018,768:1058-1063. |
| APA | Han, Xiaozhen,Feng, Xiqi,Kang, Yan,Guo, Shouguo,&Li, Yongsheng.(2018).Intervalence charge transfer transition of Co2+-Ti4+ ion pair in α-Al2O3:Co,Ti crystal.Journal of Alloys and Compounds,768,1058-1063. |
| MLA | Han, Xiaozhen,et al."Intervalence charge transfer transition of Co2+-Ti4+ ion pair in α-Al2O3:Co,Ti crystal".Journal of Alloys and Compounds 768(2018):1058-1063. |
入库方式： OAI收割
来源：上海硅酸盐研究所
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