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Journal of Rare Earths 2023年第12期41卷 2018-2024,I0007页

作者： Nanxi Lin Fangliang Sheng Xin Chen Xiaolin Hu Naifeng Zhuang College of Chemistry Fuzhou UniversityFuzhou350108China Key Laboratory of Non-destructive Testing Technology Fujian Polytechnic Normal UniversityFuqing350300China Fujian Science&Technology Innovation Laboratory for Optoelectronic Information of China Fuzhou350108China

The magneto-optical effects of rare earth ferrite can be greatly improved by doping Ce^(3+)***_(3)with high Ce^(3+)concentration has excellent magneto-optical properties in *** due to its perovskite structure it is more suitable to be deposited on the substrates of optical devices compared with the commercial garnet *** this paper,the pure phase Ce_(x)Fe_(2-x)O_(3)films were successfully obtained on the quartz glass and -oriented SrTiO3crystal substrates by radio frequency magnetron *** effects of substrate and Ce:Fe ratio on the epitaxial orientation,magnetism and magnetooptical performance of films were systematically *** the Ce1.0Fe1.0O3/STO film,its MCD ellipticity(ψF) intensity can reach up to 4750(°)/cm in the visible band and 14090(°)/cm in near ultraviolet *** it also shows a strong vertical magnetic anisotropy,which makes it maintain a good thermal stability when the device size is *** mean that the Ce_(1.0)Fe_(1.0)O_(3)/STO film has a promising application in integrated optical communication devices.

关键词： Magneto-optical effect Thin film magnetic anisotropy magnetic circular dichroism Cerium Rare earths

Specific features of Eu^(3+) and Tb^(3+) magnetooptics in gadolinium-gallium garnet (Gd_3Ga_5O_(12))

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Journal of Rare Earths 2011年第8期29卷 776-782页

作者： Uygun V. Valiev John B. Gruber 付德君 Vasiliy O. Pelenovich Gary W. Burdick Mariya E. Malysheva Faculty of Physics National University of Uzbekistan Department of Physics and Astronomy The University of Texas at San Antonio Department of Physics Wuhan University Department of Physics Andrews University

We reported magnetooptical properties of Eu3＋（4f（6）） and Tb3＋（4f（8）） in single crystals of Gd3Ga5O12 （GGG）, Y3Ga5O12 （YGG）, and Eu3＋（4f（6）） in Eu3Ga5O12 （EuGG） for both ions occupying sites of D2 symmetry in the garnet structure. Absorption, luminescence, and magnetic circular polarization of luminescence （MCPL） spectra of Tb3＋ in GGG and YGG and absorption and magnetic circular dichroism （MCD） of Eu3＋ in EuGG were studied. The data were obtained at 85 K and room temperature （RT）. magnetic susceptibility of Eu3＋ in EuGG was also measured between 85 K and RT. The magnetooptical and magnetic susceptibility data were modeled using the wavefunctions of the crystal-field split energy （Stark） levels of Eu3＋ and Tb3＋ occupying D2 sites in the same garnets. The results reported gave a precise determination of these Stark level assignments and confirmed the symmetry labels （irreducible representations） of the closely-spaced Stark levels （quasi-doublets） found in the 5D1 （Eu3＋） and 5D4 （Tb3＋） multiplets. Ultraviolet （UV） excitation （300 nm） of the 6PJ and 6IJ states of Gd3＋ in the doped GGG crystals led to emission from 5D4 （Tb3＋） and 5D1 and 5D0 （Eu3＋） through radiationless energy transfer to the 4f（n–1）5d band of Tb3＋ and to UV quintet states of Eu3＋. The temperature-dependent emission line shapes and line shifts of the magnetooptical transitions excited by UV radiation suggested a novel way to explore energy transfer mechanisms in this rare-earth doped garnet system.

关键词： magnetic circular polarization of luminescence magnetic circular dichroism absorption quantum qutting energy transfer magnetic susceptibility rare earths

On the Complementarity of Absorption and MCD Spectroscopy

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Journal of Rare Earths 1998年第3期16卷 45-51页

作者： Binnemans, K. Gorller-Walrand, C Univ of Leaven Heverlee Belgium

The use of magnetic circular dichroism(MCD) spectroscopy for probing the 4f n configuration of trivalent lanthanide ions is explored. The technique is compared with optical absorption spectroscopy. MCD is valuable for the detection of degenerate crystal field levels in uniaxial crystals and for observing transitions not resolved in the absorption sepctrum, for the study of the site symmetry and for checking the reliability of crystal field and intensity parameters. On the other hand, selection of the samples has to be done more carefully than for absorption spectroscopy, because an MCD spectrum can only be recorded in an isotropic direction.

关键词： Rare earths Lanthanides magnetic circular dichroism Zeeman effect Optical absorption

Iridium complex of porphycene:a new member of metalloporphycene

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Science China Chemistry 2020年第5期63卷 682-686页

作者： Yi Chang Fei Zhao Fan Wu Nana Ma Xiaoming Ma Yue Zhao Kin Shing Chan Zhen Shen State Key Laboratory of Coordination Chemistry School of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210046China Key Laboratory of Green Chemical Media and Reactions Ministry of EducationSchool of Chemistry and Chemical EngineeringHenan Normal UniversityXinxiang 453007China

Iridium(Ⅲ)porphycene complex was synthesized and structurally characterized for the first *** introduction of the posttransition iridium(Ⅲ)ion not only significantly enhances the absorption intensity at the end of visible region,but also displays efficient singlet oxygen quantum yield(76%),which is applicable for photodynamic therapy in living cells.

关键词： porphycene iridium complex magnetic circular dichroism singlet oxygen photodynamic therapy