Preparation, structure and spectral properties for Yb 3+ :GdGaGe2O7

Abstract

Abstract:

10at.%Yb3+:GdGaGe2O7 powders were prepared by the solid state reaction, and its structure was determined by the Rietveld refinement to the X-ray powder diffraction. Its space group is P21/c, lattice parameters are a, b, c, β，and the atomic coordinates of Gd/Yb and Ga，Ge1, Ge2 and O1~O7. The crystal field splitting of Yb3+ in GdGaGe2O7 are determined according to its absorption, excitation, emission and Raman spectra. The lifetime of 1003nm emission was 0.493ms at low temperature(8K) and 0.774ms at room temperature(300K), and the obtained decay-time is longer at room temperature which is caused by its re-absorption. The emission and absorption spectra of Yb3+: GdGaGe2O7 are relatively wide, the luminescence decay time is long, and it is a potential all-solid-state-laser medium.

Key words: materials, Yb3+: GdGaGe2O7, X-ray diffraction, photoluminescence, crystal field splitting

CLC Number:

O782

NING Kai-Jie, ZHANG Qing-Li, SUN Dun-Lu, YIN Shao-Tang. Preparation, structure and spectral properties for Yb ³⁺ :GdGaGe₂O₇[J]. J4, 2011, 28(2): 234-240.

References

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Preparation, structure and spectral properties for Yb ³⁺ :GdGaGe₂O₇

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