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Vibrational modes in La2Zr2O7 pyrochlore irradiated with disparate electrical energy losses

文献类型：期刊论文

作者Zhang, Sheng-Xia1; Liu, Jie1; Xie, Hua2; Xu, Li-Jun1,3; Hu, Pei-Pei3; Zeng, Jian1; Li, Zong-Zhen1,3; Liu, Li1,3; Ai, Wen-Si1,3; Zhai, Peng-Fei1
刊名CHINESE PHYSICS B
出版日期2019-11-01
卷号28期号:11页码:5
关键词pyrochlore heavy ion irradiation vibrational spectra phase transition
ISSN号1674-1056
DOI10.1088/1674-1056/ab43bf
通讯作者Zhang, Sheng-Xia(zhangsx@impcas.ac.cn) ; Liu, Jie(j.liu@impcas.ac.cn)
英文摘要Polycrystalline samples of La2Zr2O7 pyrochlore are irradiated by different energetic heavy ions to investigate the dependence of the vibrational mode variations on the irradiation parameters. The applied electronic energy loss (dE/dx)(e) increases from about 5.2 keV/nm to 39.6 keV/nm. The ion fluence ranges from 1 & xfffd; 10(11) ions/cm(2) to 6 & xfffd; 10(15) ions/cm(2). Vibrational modes of irradiated pyrochlore are analyzed by using Raman spectrum. Infrared active modes F-1u at 192, 308, and 651 cm(?1) appear in Raman spectra, and the F-2g band at 265 cm(?1) rises up due to the irradiation by 200-MeV Kr ions with (dE/dx)(e) of 16.0 keV/nm. Differently, for the pyrochlore irradiated by 1750-MeV Bi ions with (dE/dx)(e) of 39.6 keV/nm, in spite of the appearance of infrared active mode F-1u 651 cm(?1), the amorphous structure occurs according to the vibrational mode variations of pyrochlore irradiated at higher ion fluences. Amorphous tracks are observed in the samples, which confirm the occurrence of pyrochlore?amorphous transition in pyrochlore irradiated with (dE/dx)(e) of 39.6 keV/nm.
WOS关键词HEAVY-ION IRRADIATION ; ORDER-DISORDER TRANSITION ; RADIATION TOLERANCE ; OXIDES ; RAMAN ; GD2TI2O7 ; LA2TI2O7 ; TRACKS ; LA ; ND
资助项目National Natural Science Foundation of China[11705246] ; National Natural Science Foundation of China[11675233] ; National Natural Science Foundation of China[11690041] ; Natural Science Foundation of Gansu Province, China[17JR5RA316]
WOS研究方向Physics
语种英语
WOS记录号WOS:000493082100009
出版者IOP PUBLISHING LTD
资助机构National Natural Science Foundation of China ; Natural Science Foundation of Gansu Province, China
源URL[http://119.78.100.186/handle/113462/141184]  
专题中国科学院近代物理研究所
通讯作者Zhang, Sheng-Xia; Liu, Jie
作者单位1.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China
2.Southwest Univ Sci & Technol, Fundamental Sci Nucl Wastes & Environm Safety Lab, Mianyang 621010, Sichuan, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Sheng-Xia,Liu, Jie,Xie, Hua,et al. Vibrational modes in La2Zr2O7 pyrochlore irradiated with disparate electrical energy losses[J]. CHINESE PHYSICS B,2019,28(11):5.
APA Zhang, Sheng-Xia.,Liu, Jie.,Xie, Hua.,Xu, Li-Jun.,Hu, Pei-Pei.,...&Zhai, Peng-Fei.(2019).Vibrational modes in La2Zr2O7 pyrochlore irradiated with disparate electrical energy losses.CHINESE PHYSICS B,28(11),5.
MLA Zhang, Sheng-Xia,et al."Vibrational modes in La2Zr2O7 pyrochlore irradiated with disparate electrical energy losses".CHINESE PHYSICS B 28.11(2019):5.

入库方式： OAI收割

来源：近代物理研究所

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