Isothermal depolarization currents of Na0.5Bi0.5TiO3 ceramics

被引：2
作者：
Kluczewska, K. [1 ]
Sitko, D. [2 ]
Suchanicz, J. [1 ]
Czaja, P. [1 ]
Sokolowski, M. [3 ]
机构：
[1] Pedag Univ, Inst Technol, Krakow, Poland
[2] Pedag Univ, Inst Phys, Krakow, Poland
[3] AGH Univ Sci & Technol, Fac Comp Sci Elect & Telecommun, Krakow, Poland
来源：
PHASE TRANSITIONS | 2018年 / 91卷 / 9-10期
关键词：
Na0.5Bi0.5TiO3; ceramics; depolarization currents; activation energy; FERROELECTRIC PROPERTIES; PHASE-TRANSITIONS; DIELECTRIC-PROPERTIES; TETRAGONAL PHASE; X=0; NA1/2BI1/2TIO3; BEHAVIOR;
D O I：
10.1080/01411594.2018.1506881
中图分类号：
O7 [晶体学];
学科分类号：
0702 ; 070205 ; 0703 ; 080501 ;
摘要：
Na0.5Bi0.5TiO3 ceramics were synthesized by the conventional solid-state reaction method. The influence of polarizing electric field strength, polarization time, and temperature on the depolarization currents of these ceramics was studied. The measurements were made in both the rhombohedral (ferroelectric) and rhombohedral/tetragonal (nonpolar orweakly polar) phases coexistence. The results indicate that depolarization currents follow the I-d similar to t(-s) formula. The value of the s parameter depends on the electric field strength, the polarization time, and the temperature. The calculated activation energy is close to that obtained from electric conductivity measurements.
引用
收藏
页码：1060 / 1066
页数：7
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