Accession Number : AD0770002

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

Corporate Author : ARMY FOREIGN SCIENCE AND TECHNOLOGY CENTER CHARLOTTESVILLE VA

Personal Author(s) : Fritsberg,V. Ya.

Report Date : 19 OCT 1973

Pagination or Media Count : 17

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 + B(P 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.

Descriptors :   *Ferroelectric materials, *Barium titanates, Anharmonic oscillators, Polarization, Strontium compounds, Translations, USSR

Subject Categories : Solid State Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE