Thermally stimulated depolarization current in a modified SBN ferroelectric ceramic system

Author

Amorin, Harvey ; Venet, Michel ; Guerrero, Fidel ; Fundora, Abel ; Martinez, Eduardo ; Portelles, Jorge ; Siqueiros, Jesus

Author_Institution

Fac. de Fisica, Habana Univ., La Habana, Cuba

Volume

2

fYear

2000

fDate

2000

Firstpage

775

Abstract

The Thermally Stimulated Depolarization Current (TSDC) of the modified SBN ferroelectric ceramic system was studied. The TSDC measurements show the pyroelectric peak for all compositions while a second smaller peak at higher temperatures, possibly associated to induced vacancy-impurity dipoles is also observed in all cases. The second peak contribution was experimentally and mathematically eliminated. The activation energies and infinite temperature relaxation time of both processes are determined

Keywords

barium compounds; dielectric depolarisation; dielectric relaxation; ferroelectric ceramics; impurity-vacancy interactions; pyroelectricity; strontium compounds; thermally stimulated currents; SBN; Sr_xBa_1-xNb₂O₆; SrBaNb2O6; TSDC measurements; activation energies; compositions; induced vacancy-impurity dipoles; infinite temperature relaxation time; modified SBN ferroelectric ceramic system; pyroelectric peak; thermally stimulated depolarization current; Ceramics; Crystalline materials; Doping; Ferroelectric materials; Lanthanum; Niobium compounds; Polarization; Pyroelectricity; Temperature sensors; Titanium;

fLanguage

English

Publisher

ieee

Conference_Titel

Applications of Ferroelectrics, 2000. ISAF 2000. Proceedings of the 2000 12th IEEE International Symposium on

Conference_Location

Honolulu, HI

ISSN

1099-4734

Print_ISBN

0-7803-5940-2

Type

conf

DOI

10.1109/ISAF.2000.942434

Filename

942434