Accession Number:

AD0768625

Title:

Ferroelectric Research and Device Exploration.

Descriptive Note:

Final rept. 15 Mar 72-30 Jun 73,

Corporate Author:

PENNSYLVANIA STATE UNIV UNIVERSITY PARK MATERIALS RESEARCH LAB

Personal Author(s):

Report Date:

1973-08-01

Pagination or Media Count:

134.0

Abstract:

Work on this contract has demonstrated through the correlation of structural, dielectric and optical studies on mixed bismuth oxide layer structure compounds what is perhaps the first well authenticated instance of a ferroelectricferroelectric phase transition in the single crystal Bi2SrTa2O9 which involves no change of crystal symmetry. A new family of organo-metallic ferroelastic crystals embracing the compounds Isopropyl Ammonium Chloroplatinate IPACP and Chlorostannate IPACS has been investigated and shown to have potentially interesting thermo-optic and acoustooptic properties. Dielectric and structural studies have been continued on Pb5Ge3O11 crystals and solid solutions, and the strong dielectric relaxation for Xi33 near Tc has been partially resolved. For the system Pb5Ge2-xSixO11 glassy phases phases have been quenched from the stoichiometric ferroelectric compositions, and the recrystallization to a ferroelectric polycrystalline form investigated. Modified author abstract

Subject Categories:

  • Solid State Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE