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首页> 外文期刊>Optical Materials >Spectroscopic properties of KGd(WO_4)_2: (Er, Yb) single crystals studied by Brillouin scattering method
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Spectroscopic properties of KGd(WO_4)_2: (Er, Yb) single crystals studied by Brillouin scattering method

机译:布里渊散射法研究KGd(WO_4)_2:(Er,Yb)单晶的光谱性质

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摘要

The study of KGW: (Er, Yb) was performed for the acoustic phonons [100], [001], [-101], [101], [110] and [011]. In some Brillouin spectra obtained at room temperature we observed additional modes connected with mixed polarization modes propagating as quasi-longitudinal or quasi-transverse phonons which is characteristic for low symmetry crystals. Moreover, it has been revealed, that the value of Brillouin shift and integral intensity of the longitudinal phonon [101] propagating in KGW: (Er, Yb) show the anomaly at about 175 K.
机译:对声子[100],[001],[-101],[101],[110]和[011]进行了KGW:(Er,Yb)的研究。在室温下获得的一些布里渊光谱中,我们观察到了与混合极化模式相关的其他模式,这些混合模式传播为准纵向或准横向声子,这是低对称晶体的特征。此外,已经发现,布里渊位移值和在KGW中传播的纵向声子[101]的积分强度:(Er,Yb)在大约175 K处显示出异常。

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