摘要
简述了应用布里渊散射测量晶体的弹性和压电系数的方法,推导了C_(2v)点群晶体(100),(010)和(001)晶面内任意波矢方向的布里渊散射张量及声速各向异性方程.根据上述方法及结果,用180°散射测量了LBO晶体不同波矢方向的布里渊散射谱,得到了LBO晶体在特超声频率下所有独立的弹性和压电系数,并依此计算了该晶体的声速各向异性曲线.
The Brillouin scattering tensers and the stiffening Christoffel equations in (100), (010), and (001) planes of C2v point group crystals are obtained at arbitery wave vector directions. Based on these results, all the independent elastic and piezoelectric constants of LBO crystals are determined by means of Brillouin scattering , and the sound velocity anisotropic curves in the three planes are also shown
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
1996年第4期689-697,共9页
Acta Physica Sinica
基金
北京市科技新星计划资助的课题.
