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全面介绍了钼酸钆晶体的结构及相变情况 ;对其常温喇曼光谱进行了测试和详细分析 ,对各谱峰进行了识别和指认 ,指出实验中仅能观察到两条 Mo O42 -离子的对称伸缩振动谱线是因两种 Mo- O键长相近的 Mo O42 -离子振动模的简并造成的 ,反对称伸缩振动模式大的光谱分裂范围是因晶胞中 Mo O42 - 离子数目较多和较强的层间耦合造成的
The structure and phase transition of gadolinium molybdate crystal were comprehensively introduced. The Raman spectra at room temperature were tested and analyzed in detail, and the peaks were identified and identified. It was pointed out that only two Mo O42 - ions The symmetric stretching vibrational spectrum is due to the degeneracy of Mo O42 - ion vibration modes with two similar Mo - O bond lengths. The large spectral splitting range of antisymmetric stretching vibration mode is due to the fact that the number of Mo O42 - ions in the unit cell is larger More and stronger layers caused by the coupling