FREQUENCY AND TEMPERATURE RESPONSE OF THE POLARIZATION OF BARIUM TITANATE,
Abstract
The frequency and temperature response of the polarization of BaTiO3 from 0 to 1000 reciprocal cm and between 24 and 200 C was determined by transmission and reflectivity measurements. The infrared transmission of thin single-crystal BaTiO3 was recorded from 250 to 4000 reciprocal cm; a single absorption band located at 491 reciprocal cm was observed. The reflectivity of single-domain BaTiO3 was measured continuously from 10 to 4000 reciprocal cm, and at points of 0.77, 5, and 10 reciprocal cm. A drop in reflectivity occurs from 10 to 70 reciprocal cm and absorption bands are located near 175 and 470 reciprocal cm. Measurements of the dielectric constant of single-domain crystals at 0.77 reciprocal cm (24 kMc) yielded permittivities of about 1500, indicating no relaxation from the low-frequency dielectric constant. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1964
- Accession Number
- AD0435903
Entities
People
- Joseph M. Ballantyne
Organizations
- Massachusetts Institute of Technology