The optical properties of Tb₂O₃ under extreme conditions are of interest because Tb₂O₃ is widely used for optical devices. In this study, the effect of high-pressure loading on Tb₂O₃ powder subjected to shock compression was structurally and spectroscopically investigated. The shock-compressed samples were recovered from a high-pressure state to ambient conditions and then characterized by X-ray diffraction analysis, photoluminescence (PL) measurement, and Raman spectroscopy. The onset of the cubic (C-type) to monoclinic (B-type) phase transition of Tb₂O₃ was confirmed for a sample shocked at 4.3GPa. The C- and B-type phases coexist between 4.3 and 29GPa. Changes in the PL excitation PL spectra associated with an increase in yield to the B-type phase were observed. The chromaticity coordinates for the shocked samples indicated that emission color was changed from green to yellowish-green.

Tb ₂ O ₃在极端条件下的光学特性令人感兴趣，因为 Tb ₂ O ₃广泛用于光学器件。在这项研究中，高压载荷对受到冲击压缩的Tb ₂ O ₃粉末的影响进行了结构和光谱研究。冲击压缩的样品从高压状态恢复到环境条件，然后通过 X 射线衍射分析、光致发光 (PL) 测量和拉曼光谱进行表征。Tb ₂ O ₃从立方（C 型）到单斜（B 型）相变的开始确认样品在 4.3GPa 下受到冲击。C 型和 B 型相在 4.3 和 29GPa 之间共存。观察到与 B 型相产量增加相关的 PL 激发 PL 光谱的变化。冲击样品的色度坐标表明发射颜色从绿色变为黄绿色。