发光学报Issue(11)：1336-1341,6.DOI:10.3788/fgxb20143511.1336
球磨法制备Tm3+/Yb3+掺杂NaGdF4的上转换发光及顺磁性质研究
Up-conversion and Paramagnetism of NaGdF4:Tm3+,Yb3+ Synthesized by Ball Milling Method
摘要
Abstract
Tm3+/Yb3+ doped NaGdF4 luminescent powder with different Na sources and ion ratios were synthesized by ball milling method, and part of samples were treated under high temperature. In all selected molar ratios of the ions, n( RE)∶n( Na)∶n( F) =1∶1∶4 is the best. The up-conver-sion luminescence of the samples with this ratio is the strongest before and after high temperature treatment. After high temperature treatment, the intensity of visible light emission increases signifi-cantly. XRD results show that Tm3+ and Yb3+ have doped in the lattices of NaGdF4 . After high tem-perature treatment, part ofβ-phase and amorphous phase turn toα-phase, which results in the crys-tallinity improving. HRTEM image also shows thatα-andβ-phase coexist in the sample. The exci-tation of 980 nm laser hardly has effect on the paramagnetism of the samples, but the changing mag-netic field has negative effect on the up-conversion luminescence of the samples.关键词
球磨法/上转换/顺磁性/荧光Key words
ball milling/upconversion/paramagnetism/luminescence分类
数理科学引用本文复制引用
高鸿健,刘婧,刘钟馨..球磨法制备Tm3+/Yb3+掺杂NaGdF4的上转换发光及顺磁性质研究[J].发光学报,2014,(11):1336-1341,6.基金项目
海南省自然科学基金(513136) （513136）
海南省国际科技合作重点项目计划(GJXM201103)资助项目 （GJXM201103）
