辐射对PLZT和PSN陶瓷光学和介电性能的影响

ISAF '96. Proceedings of the Tenth IEEE International Symposium on Applications of Ferroelectrics Pub Date : 1996-08-18 DOI:10.1109/ISAF.1996.598106

A. Sternberg, L. Shebanovs, E. Birks, A. Spule, P. Kulis, H. Weber, H. Klima, F. Sauerzopf, U. Ulmanis

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引用次数: 0

摘要

通过等时和长时间退火，分析了/spl γ /射线、电子和中子(影响高达2.10/sup 18/ n/cm/sup 2/)辐照对PLZT X/65/35 (X=4.5-11 at%)和PbSc/sub 0.5/Nb/sub 0.5/O/sub 3/陶瓷的消光光谱和介电特性(介电常数/spl epsi/和损耗的滞后、热和频率依赖)的影响。在中子辐照的PLZT陶瓷中，随着辐照强度的增加，消光边逐渐向更长的波长移动，极化和/spl epsi/值逐渐减小，相变逐渐扩散。

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Radiation effects on optical and dielectric properties of PLZT and PSN ceramics

The effects of /spl gamma/-ray, electron and neutron (fluences up to 2.10/sup 18/ n/cm/sup 2/) irradiation on extinction spectra and dielectric characteristics (hysteresis, thermal and frequency dependencies of dielectric permittivity /spl epsi/ and losses) in PLZT X/65/35 (X=4.5-11 at%) and PbSc/sub 0.5/Nb/sub 0.5/O/sub 3/ 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 /spl epsi/ 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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ISAF '96. Proceedings of the Tenth IEEE International Symposium on Applications of Ferroelectrics

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