Impedance Spectroscopy of (Pb0.92La0.08)(Zr0.95Ti0.05)O3 Ceramics above Room Temperatures

被引：0

作者：

Park, Jong-Ho ^{[1
]}

机构：

[1] Chinju Natl Univ Educ, Dept Sci Educ, Jinju 52673, South Korea

来源：

KOREAN JOURNAL OF MATERIALS RESEARCH | 2024年 / 34卷 / 05期

关键词：

perovskites; impedance; lanthanum-modified lead zirconate titanate; dielectric dispersion; ferroelectric; BEHAVIOR; INCOMMENSURATION; STRAIN;

D O I：

10.3740/MRSK.2024.34.5.242

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

La modified lead zirconate titanate ceramics (Pb0.92La0.08)(Zr0.95Ti0.05)O-3 = PLZT-8/95/5 were prepared using the conventional solid state reaction method in order to investigate the complex impedance characteristics of the PLZT-8/95/5 ceramic according to temperature. The complex impedance in the PLZT-8/95/5 ceramic was measured over a temperature range of 30 similar to 550 degrees C at several frequencies. The complex dielectric constant anomaly of the phase transition was observed near TU1 = 179 degrees C and TU2 = 230 degrees C. A remarkable diffuse dielectric constant anomalous behaviour of the complex dielectric constant was found between 100 degrees C and 550 degrees C. The complex impedance spectra below and above TU1 and TU2 were fitted by the superposition of two Cole-Cole types of impedance relaxations. The fast component in the higher frequency region may be due to ion migration in the bulk, and the slow component in the lower frequency region is interpreted to be the formation and migration of ions at the grain boundary or electrode/crystal interfacial polarization.

引用

页码：242 / 246

页数：5

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