6533b822fe1ef96bd127d5ea

RESEARCH PRODUCT

Structural, Optical, and Dielectric Investigations of the Relaxor PLZT 9,75/65/35 Ceramics Irradiated by High-Current Pulsed Electron Beam

V. F. MinashkinN. N. NovikovaA. V. KalmikovE. A. KlevtsovaAndris SternbergV. V. IvanovV. A. YakovlevV. V. SikolenkoV. V. EfimovS. I. TiutiunnikovA. V. Skripnik

subject

Materials sciencebusiness.industryPhononPulse durationDielectricElectronNeutron scatteringCondensed Matter PhysicsElectronic Optical and Magnetic MaterialsOpticsElectron beam processingIrradiationAtomic physicsbusinessCurrent density

description

A comprehensive study of high-current pulsed electron irradiation effects on the structural, optical and dielectric properties of relaxor (Pb (1-x )La x )(Zr 0.65 Ti 0.35 ) 1-x/4 O 3 ceramics with x = 9,75 at.% has been performed for the first time. The electron beam had the following parameters: energy E = 250 keV, current density I = 1000 A/cm 2 , pulse duration τ = 300 ns, beam density -10 15 electrons/cm 2 per pulse. Infrared reflectivity spectra in the region of 100 ÷ 2000 cm -1 were obtained in virgin, irradiated by 1500 pulses and annealed up to 500°C ceramics. The reconstruction of perovskite ABO 3 structure in irradiated samples has been studied by combined use of X-ray diffraction, neutron scattering and IR spectroscopy techniques. Changes in the unit cell parameters, transverse and longitudinal phonon modes, oscillator's strength and damping of modes have been revealed. Radiation effects on temperature behaviour of dielectric permittivity e in the region of phase transition have been studied. Possible mechanisms of pulsed electron inadiation effects in relaxor PLZT ceramics are discussed.

yearjournalcountryeditionlanguage
2003-01-01Ferroelectrics
https://doi.org/10.1080/00150190390206103