The effects of gamma-ray, electron and neutron (fluences up to 210(18) n/cm(2)) irradiation on extinction spectra and dielectric characteristics (hysteresis, thermal and frequency dependencies of dielectric permittivity epsilon 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 epsilon values, and a progressive diffusion of the phase transition with the increase of irradiation fluence are observed in neutron irradiated PLZT ceramics.
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Vilnius State Univ, Fac Phys, LT-10222 Vilnius, LithuaniaVilnius State Univ, Fac Phys, LT-10222 Vilnius, Lithuania
Ivanov, Maksim
Banys, Juras
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Vilnius State Univ, Fac Phys, LT-10222 Vilnius, LithuaniaVilnius State Univ, Fac Phys, LT-10222 Vilnius, Lithuania
Banys, Juras
Bogicevic, C.
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Ecole Cent Paris, Lab Struct, UMR 8580, F-92295 Chatenay Malabry, FranceVilnius State Univ, Fac Phys, LT-10222 Vilnius, Lithuania
Bogicevic, C.
Kiat, Jean-Michel
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Ecole Cent Paris, Lab Struct, UMR 8580, F-92295 Chatenay Malabry, France
CE Saclay CNRS, UMR 12, Lab Leon Brillouin, F-91991 Gif Sur Yvette, FranceVilnius State Univ, Fac Phys, LT-10222 Vilnius, Lithuania