Accession Number:

AD0770002

Title:

Study of Polarization Nonlinearity Near Phase Transitions in Perovskite-Type Ferroelectrics, Using An Anharmonic Oscillator Model,

Descriptive Note:

Corporate Author:

ARMY FOREIGN SCIENCE AND TECHNOLOGY CENTER CHARLOTTESVILLE VA

Personal Author(s):

Report Date:

1973-10-19

Pagination or Media Count:

17.0

Abstract:

A model of an anharmonic oscillator is applied to a unit cell of the perovskite structure. A microscopic representation for the coefficients A and B in the expansion of the form E AP BP cubed is found by the method of Boguslavskiy, and extended to the paraelectric state of the ferroelectric. Comparison is made with experimental data on the system Ba, Sr TiO3.

Subject Categories:

  • Solid State Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE