Abstract
The microscopic mechanism of refractive indices, birefringence and spontaneous polarization of BaTiO3 and KNbO3 in the tetragonal phase is discussed by using a microscopic model. In this model, we have taken account of a quantum method based upon the orbital approximation and the dipole–dipole interaction due to the local field acting on the constituent ions. It is found that the electronic polarizabilities play a major role in these calculations and that the obtained results of the refractive indices, birefringence δn and spontaneous polarization are in good agreement with the experimental data.
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.
