Local microstructural analysis for Y2O3/Eu3+/Mg2+ nanorods by Raman and photoluminescence spectra under high pressure

doi:10.1088/1674-1056/26/2/026101

中国物理B ›› 2017, Vol. 26 ›› Issue (2): 26101-026101.doi: 10.1088/1674-1056/26/2/026101

• CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES • 上一篇下一篇

Local microstructural analysis for Y₂O₃/Eu³⁺/Mg²⁺ nanorods by Raman and photoluminescence spectra under high pressure

Jin-Hua Wang(王金华), Ze-Peng Li(李泽朋), Bo Liu(刘波), Bing-Bing Liu(刘冰冰)

1 School of Science, Tianjin University of Technology and Education, Tianjin 300222, China;
2 School of Science, Civil Aviation University of China, Tianjin 300300, China;
3 State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, China

收稿日期:2016-08-17 修回日期:2016-10-28 出版日期:2017-02-05 发布日期:2017-02-05
通讯作者: Ze-Peng Li, Bing-Bing Liu E-mail:li_zepeng@163.com;liubb@jlu.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11304380, 11404241, 11275138, 11604240, and 51320105007) and the Program for Changjiang Scholars and Innovative Research Team in University, China (Grant No. IRT1132).

Local microstructural analysis for Y₂O₃/Eu³⁺/Mg²⁺ nanorods by Raman and photoluminescence spectra under high pressure

Jin-Hua Wang(王金华)^1,3, Ze-Peng Li(李泽朋)^2,3, Bo Liu(刘波)³, Bing-Bing Liu(刘冰冰)³

1 School of Science, Tianjin University of Technology and Education, Tianjin 300222, China;
2 School of Science, Civil Aviation University of China, Tianjin 300300, China;
3 State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, China

Received:2016-08-17 Revised:2016-10-28 Online:2017-02-05 Published:2017-02-05
Contact: Ze-Peng Li, Bing-Bing Liu E-mail:li_zepeng@163.com;liubb@jlu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11304380, 11404241, 11275138, 11604240, and 51320105007) and the Program for Changjiang Scholars and Innovative Research Team in University, China (Grant No. IRT1132).

摘要/Abstract

摘要： In this paper, we investigate the Raman and photoluminescence spectra of Y₂O₃/Eu³⁺ and Y₂O₃/Eu³⁺/Mg²⁺ nanorods under high pressures using 514-nm and 532-nm laser light excitation. We observe transitions from the initial cubic phase to amorphous at pressures higher than 24 GPa for both Y₂O₃/Eu³⁺ and Y₂O₃/Eu³⁺/Mg²⁺ nanorods. In addition, Y₂O₃/Eu³⁺ and Y₂O₃/Eu³⁺/Mg²⁺ nanorods exhibit different distorted states after the pressure has been raised to 8 GPa. The analyses of intensity ratios, I_0-2/I_0-1 from ⁵D₀-⁷F₂ to ⁵D₀-⁷F₁ and I_0-2A/B of ⁵D₀-⁷F₂ transitions indicate that Y₂O₃/Eu³⁺/Mg²⁺ nanorods exhibit stronger local micro-surrounding characteristics for Eu³⁺ ions in a pressure-modulated crystal field. The doped Mg²⁺ ion results in reducing the crystal ionicity in the distorted lattice state under high pressures. The use of doped ions as an ion modifier can be applied to the study of small local microstructural changes through Eu³⁺ luminescence.

关键词: high-pressure, Y₂O₃/Eu³⁺, local structure

Abstract: In this paper, we investigate the Raman and photoluminescence spectra of Y₂O₃/Eu³⁺ and Y₂O₃/Eu³⁺/Mg²⁺ nanorods under high pressures using 514-nm and 532-nm laser light excitation. We observe transitions from the initial cubic phase to amorphous at pressures higher than 24 GPa for both Y₂O₃/Eu³⁺ and Y₂O₃/Eu³⁺/Mg²⁺ nanorods. In addition, Y₂O₃/Eu³⁺ and Y₂O₃/Eu³⁺/Mg²⁺ nanorods exhibit different distorted states after the pressure has been raised to 8 GPa. The analyses of intensity ratios, I_0-2/I_0-1 from ⁵D₀-⁷F₂ to ⁵D₀-⁷F₁ and I_0-2A/B of ⁵D₀-⁷F₂ transitions indicate that Y₂O₃/Eu³⁺/Mg²⁺ nanorods exhibit stronger local micro-surrounding characteristics for Eu³⁺ ions in a pressure-modulated crystal field. The doped Mg²⁺ ion results in reducing the crystal ionicity in the distorted lattice state under high pressures. The use of doped ions as an ion modifier can be applied to the study of small local microstructural changes through Eu³⁺ luminescence.

Key words: high-pressure, Y₂O₃/Eu³⁺, local structure

中图分类号: (Structure of nanowires and nanorods (long, free or loosely attached, quantum wires and quantum rods, but not gate-isolated embedded quantum wires))

61.46.Km

78.55.Qr (Amorphous materials; glasses and other disordered solids)

王金华, 李泽朋, 刘波, 刘冰冰. Local microstructural analysis for Y₂O₃/Eu³⁺/Mg²⁺ nanorods by Raman and photoluminescence spectra under high pressure[J]. 中国物理B, 2017, 26(2): 26101-026101.

Jin-Hua Wang(王金华), Ze-Peng Li(李泽朋), Bo Liu(刘波), Bing-Bing Liu(刘冰冰). Local microstructural analysis for Y₂O₃/Eu³⁺/Mg²⁺ nanorods by Raman and photoluminescence spectra under high pressure[J]. Chin. Phys. B, 2017, 26(2): 26101-026101.

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Local microstructural analysis for Y₂O₃/Eu³⁺/Mg²⁺ nanorods by Raman and photoluminescence spectra under high pressure

Local microstructural analysis for Y₂O₃/Eu³⁺/Mg²⁺ nanorods by Raman and photoluminescence spectra under high pressure

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