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Spectral analysis and crystal-field fitting of Nd3+ doped in LuTaO4

Published online by Cambridge University Press:  03 October 2016

J.Y. Gao ,
Y.P. Zhao ,
Q.L. Zhang ,
X.F. Wang ,
W.P. Liu ,
S.J. Ding ,
D.L. Sun  and
S.T. Yin
J.Y. Gao*
Affiliation:
Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, People's Republic of China
Y.P. Zhao
Affiliation:
Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, People's Republic of China
Q.L. Zhang*
Affiliation:
Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, People's Republic of China
X.F. Wang
Affiliation:
Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, People's Republic of China; and Graduate School of the Chinese Academy of Science, Beijing 100049, People's Republic of China
W.P. Liu
Affiliation:
Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, People's Republic of China
S.J. Ding
Affiliation:
Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, People's Republic of China; and Graduate School of the Chinese Academy of Science, Beijing 100049, People's Republic of China
D.L. Sun
Affiliation:
Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, People's Republic of China
S.T. Yin
Affiliation:
Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, People's Republic of China
*
a) Address all correspondence to these authors. e-mail: jygao1985@sina.com
b) e-mail: zql@aiofm.ac.cn
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Abstract

The polycrystalline Nd3+-doped rare earth orthotantalate LuTaO4 was synthesized with high temperature solid-state reaction method, and the structure was determined by applying the Rietveld refinement to its x-ray diffraction. Also, the emission and excitation spectra at 7.6 K have been analyzed. The free-ions and crystal-field parameters were fitted to the experimental energy levels with the root mean square deviation of 14.6 cm−1. According to the crystal-field calculations, 152 Stark energy levels of Nd3+ were assigned. Finally, the fitting results of free-ions and crystal-field parameters were compared with those already reported for Nd3+:YAlO3. The results indicate that the free-ions parameters are similar to those of the Nd3+ in LuTaO4 and YAlO3 hosts except for the values of two-body electrostatic parameter γ, and the 2-rank crystal-field parameters of two hosts have relatively large differences while other crystal-field parameters have been similar to each other. Moreover, the crystal-field interaction of Nd3+ in LuTaO4 is stronger than that in YAlO3.

Keywords

LuTaO4emission spectraexcitation spectraenergy levelscrystal-field fitting
Type
Articles
Information
Journal of Materials Research , Volume 31 , Issue 20 , 28 October 2016 , pp. 3255 - 3261
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Copyright
Copyright © Materials Research Society 2016 

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