Polarized Raman spectroscopic investigation on oriented single crystal of orthovanadate Co₃(VO₄)₂ is carried out. We have observed and identified symmetries of 32 out of 36 expected Raman active modes of Co₃(VO₄)₂ in different polarization directions. Evolution of frequencies of observed Raman active modes in Co₃(VO₄)₂ are also investigated under variable thermodynamical conditions. The isothermal high pressure Raman spectroscopic investigation indicates stable orthorhombic (Cmca) structure up to 15.7 GPa consistent with reported literature. The isobaric high temperature Raman spectroscopic investigation up to 823 K is used to estimate the total anharmonicity of all the observed Raman active modes. Evolution of Raman spectra indicates structural stability in the temperature and pressure range investigated. By a combination of high pressure and temperature dependent Raman spectroscopic data, the analysis of anharmonicity of observed Raman modes are calculated. Our measurements indicate dominant contribution of three phonon decay process for almost all the observed Raman active modes in Co₃(VO₄)₂. The anharmonicity information along with symmetry of these observed modes can be used as an input in the analysis of expected spin-phonon anomalies around the magnetic transition in Co₃(VO₄)₂ in future investigations.

_{对原钒酸盐Co 3} (VO ₄ ) ₂取向单晶进行了偏振拉曼光谱研究。我们观察并识别了 Co ₃ (VO ₄ ) ₂在不同偏振方向的 36 种预期拉曼活性模式中的 32 种的对称性。还研究了在可变热力学条件下观察到的 Co ₃ (VO ₄ ) ₂中拉曼活性模式的频率演变。等温高压拉曼光谱研究表明稳定的斜方晶系 ( Cmca ) 结构高达 15.7 GPa，与报道的文献一致。高达 823 K 的等压高温拉曼光谱研究用于估计所有观察到的拉曼主动模式的总非谐性。拉曼光谱的演变表明了所研究的温度和压力范围内的结构稳定性。通过结合高压和温度相关的拉曼光谱数据，计算观测到的拉曼模式的非谐性分析。_{我们的测量表明，对于 Co 3} (VO ₄ ) ₂中几乎所有观察到的拉曼活性模式，三个声子衰变过程的主要贡献。在未来的研究中，这些观察到的模式的非谐性信息以及对称性可以用作分析 Co ₃ (VO ₄ ) ₂磁转变周围预期自旋声子异常的输入。