【摘要】 对BiB3O6晶体(BIBO)的拉曼光谱进行了研究。BIBO的振动模分为外模和内模,外模总数是2A+5B,内模数是11A+10B。运用分子位置群分析的方法分析内模,BIBO的内模归属于[BO3]三角形和[BO4]四面体的振动模,[BO3]和[BO4]共享O原子。外部振动起源于Bi3+、[BO3]基团的平移模与[BO3]基团的天平动。更多还原

【Abstract】 Raman spectra of BiB₃O₆ crystal（BIBO） was studied.It is an approximate treatment to divide the vibrational modes of the BIBO crystal into internal and external modes,the total number of external motions of BIBO are 2A+5B,the internal motions of the BIBO are 11A+10B.By using the method of molecular site group analysis,we attributed tentatively the internal modes BIBO to the vibrational modes of the BO₃ triangle and BO₄ tetrahedron,the BO₄ tetrahedron and BO₃ triangle share oxygen atoms.The external vibrations originated from the translational motions of Bi³⁺ and triborate anion group plus the librational motion of triborate anion group.更多还原