Spectral analysis and crystal-field fitting of Nd~(3+) doped in LuTaO_4

J.Y. Gao; Y.P. Zhao; Q.L. Zhang; X.F. Wang; W.P. Liu; S.J. Ding; D.L. Sun; S.T. Yin

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Spectral analysis and crystal-field fitting of Nd~(3+) doped in LuTaO_4

机译：LuTaO_4掺杂Nd〜（3+）的光谱分析和晶体场拟合

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The polycrystalline Nd~(3+)-doped rare earth orthotantalate LuTaO_4 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 Nd~(3+) were assigned. Finally, the fitting results of free-ions and crystal-field parameters were compared with those already reported for Nd~(3+): YAlO_3. The results indicate that the free-ions parameters are similar to those of the Nd~(3+) in LuTaO_4 and YAlO_3 hosts except for the values of two-body electrostatic parameter y, 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 Nd~(3+) in LuTaO_4 is stronger than that in YAlO_3.

机译：采用高温固相反应法合成了掺Nd〜（3+）多晶稀土原钽酸盐LuTaO_4，并对其结构进行了Rietveld精制，确定了结构。此外，还分析了7.6 K时的发射光谱和激发光谱。将自由离子和晶体场参数拟合到实验能级，均方根偏差为14.6 cm〜（-1）。根据晶体场的计算，Nd〜（3+）的能级分配为152。最后，将自由离子和晶体场参数的拟合结果与已报道的Nd〜（3+）：YAlO_3的结果进行了比较。结果表明，LuTaO_4和YAlO_3主体中的自由离子参数与Nd〜（3+）相似，除了两体静电参数y的值以及两个主体的2级晶体场参数之外。它们具有相对较大的差异，而其他晶体场参数彼此相似。此外，LuTaO_4中Nd〜（3+）的晶体场相互作用比YAlO_3中的强。

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来源
《Journal of Materials Research》 |2016年第20期|3255-3261|共7页
作者
J.Y. Gao; Y.P. Zhao; Q.L. Zhang; X.F. Wang; W.P. Liu; S.J. Ding; D.L. Sun; S.T. Yin;
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作者单位

Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, People's Republic of China;

Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, People's Republic of China;

Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, People's Republic of China;

Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, People's Republic of China Graduate School of the Chinese Academy of Science, Beijing 100049, People's Republic of China;

Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, People's Republic of China;

Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, People's Republic of China Graduate School of the Chinese Academy of Science, Beijing 100049, People's Republic of China;

Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, People's Republic of China;

Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, People's Republic of China;

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Spectral analysis and crystal-field fitting of Nd~(3+) doped in LuTaO_4

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