Epr and optical studies of cr-doped pbwo4 single crystals
文献类型：期刊论文
| 作者 | Li, Weifeng; Feng, Xiqi |
| 刊名 | Optical materials
 |
| 出版日期 | 2007 |
| 卷号 | 29期号:5页码:457-461 |
| 关键词 | Pbwo4 crystal Doping Point defects Epr Photoluminescence |
| ISSN号 | 0925-3467 |
| DOI | 10.1016/j.optmat.2005.07.014 |
| 通讯作者 | Feng, xiqi(xqfeng@sunm.shcnc.ac.cn) |
| 英文摘要 | Electron paramagnetic resonance (epr) studies were performed on cr ions in pbwo4 crystals using an x-band spectrometer. with the help of fourier-transform infrared (ftir) and thermoluminescence (tsl) data, it was proposed that cr3+ impurities enter pbwo4 lattice in the pb-site and result in large relaxation of crystal lattice, which was illustrated by the significant distortion of wo4 tetrahedron and the rapid decrease of blue luminescence band. further, for heavily doped samples some new epr signals, which did not appear in the lightly doped sample, were detected. the new epr lines were ascribed to the exchange-coupled effect of cr3+-ion pairs. luminescence spectra provide support to the idea about defect clusters. the presence of cr3+-ion pairs or cr3+-ion associations in heavily doped pwo is the reason for the luminescence quench of pwo host and cr3+ ion. (c) 2005 elsevier b.v. all rights reserved. |
| WOS关键词 | ELECTRON-PARAMAGNETIC-RESONANCE ; SCINTILLATION CHARACTERISTICS ; THERMOLUMINESCENCE ; IMPURITIES ; CENTERS |
| WOS研究方向 | Materials Science ; Optics |
| WOS类目 | Materials Science, Multidisciplinary ; Optics |
| 语种 | 英语 |
| WOS记录号 | WOS:000243610900002 |
| 出版者 | ELSEVIER SCIENCE BV |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2381868 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Feng, Xiqi |
| 作者单位 | 1.Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Weifeng,Feng, Xiqi. Epr and optical studies of cr-doped pbwo4 single crystals[J]. Optical materials,2007,29(5):457-461. |
| APA | Li, Weifeng,&Feng, Xiqi.(2007).Epr and optical studies of cr-doped pbwo4 single crystals.Optical materials,29(5),457-461. |
| MLA | Li, Weifeng,et al."Epr and optical studies of cr-doped pbwo4 single crystals".Optical materials 29.5(2007):457-461. |
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来源：中国科学院大学
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