Title :
Radiation effects on optical and dielectric properties of PLZT and PSN ceramics
Author :
Sternberg, Andris ; Shebanovs, Leonids ; Birks, Eriks ; Spule, Astrida ; Kulis, Peteris ; Weber, Harald W. ; Klima, Herbert ; Sauerzopf, Franz ; Ulmanis, U.
Author_Institution :
Inst. of Solid State Phys., Latvia Univ., Riga, Latvia
Abstract :
The effects of γ-ray, electron and neutron (fluences up to 2.1018 n/cm2) irradiation on extinction spectra and dielectric characteristics (hysteresis, thermal and frequency dependencies of dielectric permittivity ε and losses) in PLZT X/65/35 (X=4.5-11 at%) and PbSc0.5Nb0.5O3 ceramics are analyzed with respect to composition state of phase, and polarization by means of annealing in isochronic and prolonged time regimes. A gradual shift of extinction edge to longer wavelengths, reduction of polarization and ε values, and a progressive diffusion of the phase transition with the increase of irradiation fluence are observed in neutron irradiated PLZT ceramics
Keywords :
annealing; ceramics; dielectric hysteresis; dielectric losses; dielectric polarisation; electron beam effects; gamma-ray effects; lanthanum compounds; lead compounds; neutron effects; permittivity; piezoceramics; visible spectra; γ-ray irradiation; PLZT; PSN; PbLaZrO3TiO3; PbScNbO3; ceramic; composition; dielectric hysteresis; dielectric loss; electron irradiation; extinction spectrum; isochronic annealing; neutron irradiation; optical properties; permittivity; phase transition; polarization; Ceramics; Dielectric losses; Electron optics; Frequency; Hysteresis; Neutrons; Optical losses; Permittivity; Polarization; Radiation effects;
Conference_Titel :
Applications of Ferroelectrics, 1996. ISAF '96., Proceedings of the Tenth IEEE International Symposium on
Conference_Location :
East Brunswick, NJ
Print_ISBN :
0-7803-3355-1
DOI :
10.1109/ISAF.1996.598106
