Accession Number:

AD0435903

Title:

FREQUENCY AND TEMPERATURE RESPONSE OF THE POLARIZATION OF BARIUM TITANATE,

Descriptive Note:

Corporate Author:

MASSACHUSETTS INST OF TECH CAMBRIDGE LAB FOR INSULATION RESEARCH

Personal Author(s):

• Ballantyne,Joseph M.

Report Date:

1964-03-01

Pagination or Media Count:

37.0

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

Descriptors:

• (*BARIUM COMPOUNDS
• TITANATES)
• (*TITANATES
• POLARIZATION)
• DIELECTRIC PROPERTIES
• FERROELECTRICITY
• INFRARED SPECTROSCOPY
• MICROWAVE SPECTROSCOPY
• INTERFEROMETERS
• SPECTROPHOTOMETERS
• FREQUENCY
• TEMPERATURE
• REFLECTION
• SINGLE CRYSTALS
• LIGHT TRANSMISSION

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE