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Proceedings Paper

Radiation effects in transparent ferroelectric ceramics
Author(s): Andris R. Sternberg; A. Spule; L. Shebanovs; E. Birks; Peteris Kulis; Harald W. Weber; F. M. Sauerzopf; H. Klima; Uldis Ulmanis
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Paper Abstract

Radiation of different types ((gamma) -rays, electrons, neutrons) and fluence has been used to study the defect processes as well as the change of physical parameters in PLZT X/65/35 (X equals 4.5 - 11 at.%) and PbSc0.5Nb0.5O3 (PSN) ceramics and to evaluate critical irradiation conditions. Effects on optical (extinction) spectra and dielectric characteristics (polarization, thermal and frequency dependences of dielectric permittivity (epsilon) and losses), dependent on composition and state of phase and polarization have been analyzed by means of annealing in isochronic and prolonged time regimes. A gradual shift of extinction edge to longer wavelengths, reduction of polarization and (epsilon) values, and a progressive diffusion of the phase transition including a defect-stimulated phase transformation from the rhombohedral to quasicubic structure in PLZT 6.5-8.5/65/36 compositions with the increase of irradiation fluence are observed in neutron irradiated ceramics. First radiation-induced electrical conductivity studies in PLZT ceramics are presented.

Paper Details

Date Published: 4 February 1997
PDF: 7 pages
Proc. SPIE 2967, Optical Inorganic Dielectric Materials and Devices, (4 February 1997);
Show Author Affiliations
Andris R. Sternberg, Univ. of Latvia (Latvia)
A. Spule, Univ. of Latvia (Latvia)
L. Shebanovs, Univ. of Latvia (Latvia)
E. Birks, Univ. of Latvia (Latvia)
Peteris Kulis, Univ. of Latvia (Latvia)
Harald W. Weber, Atomic Institute of the Austrian Univs. (Austria)
F. M. Sauerzopf, Atomic Institute of the Austrian Univs. (Austria)
H. Klima, Atomic Institute of the Austrian Univs. (Austria)
Uldis Ulmanis, Nuclear Research Ctr. (Latvia)

Published in SPIE Proceedings Vol. 2967:
Optical Inorganic Dielectric Materials and Devices
Andris Krumins; Donats K. Millers; Andris R. Sternberg; Janis Spigulis, Editor(s)

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