Abstract
Balance equations and the boundary conditions of elastic dielectrics are derived through a variational principle in which, to include the spatial and frequency dispersion effects, the first and second gradients of the deformation gradient and the polarization gradient are chosen as independent variables in addition to the deformation gradient and polarization. The polarization inertia effect is also included in the functional. The coupling of soft-optic modes with the displacement field is investigated and the results are particularized for potassium tantalate (KTaO 3). The numerical values of some of its material constants and its polarization inertia are calculated. Using an approximate strain energy density function for α-quartz, the material coefficient matrices are obtained and tabulated. The acoustical, optical and infrared activities of α-quartz are examined and the results are compared with those available in the literature.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
