Testing a Point-Dipole Electro-Optic Model by an Application to Lead Titanate
Abstract
A molecular point-dipole model that has been used successfully to calculate ferroelectric and electro-optic properties of the perovskite barium titanate (BaTiO3) is further tested here by an application to lead titanate (PbTiO3). The model calculates lorentz factors by the method of Rama Rau and the crystal's internal electric fields by the Ewald method of lattice sums. The model further treats the polarizabilities of ions as field-dependent and simulates covalency in bonds by replacing the full ionic charge by an 'effective' charge. The Kerr and Pockel electro-optic constants are determined by the anisotropy induced in the refractive index by an external electric field.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1972
- Accession Number
- AD0753467
Entities
People
- August S. Sanchez
Organizations
- Air Force Institute of Technology