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	Epr and optical studies of cr-doped pbwo4 single crystals
	Li, Weifeng; Feng, Xiqi
刊名	Optical materials
	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
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000243610900002
内容类型	期刊论文
URI标识	http://www.corc.org.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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