Low-temperature dielectric and impedance properties of SrSn0.2Ti0.8O3 ceramics

被引：0

作者：

Wang, Depeng ^{[1
]}

Niu, Ruifeng ^{[1
]}

Cui, Liqi ^{[1
]}

Wang, Weitian ^{[1
]}

机构：

[1] Yantai Univ, Sch Phys & Elect Informat, Yantai 264005, Peoples R China

来源：

JOURNAL OF CERAMIC PROCESSING RESEARCH | 2023年 / 24卷 / 03期

关键词：

Ceramics; Dielectric properties; Impedance analysis; ELECTRICAL-PROPERTIES; STRONTIUM-TITANATE; BEHAVIOR;

D O I：

10.36410/jcpr.2023.24.3.583

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Tin-doped and undoped perovskite SrTiO3 ceramics were synthesized by solid-state reaction method using SrCO3, TiO2 and SnO2 powders as raw materials. When the samples sintered at 1400 degrees C, the SrSn0.2Ti0.8O3 and SrTiO3 ceramics all crystallized in cubic structures. The lattice parameters of SrSn0.2Ti0.8O3 are slightly larger than that of SrTiO3 due to the bigger size of Sn4+ ions. The frequency-dependent dielectric and impedance properties of SrSn0.2Ti0.8O3 ceramics were investigated in the temperature range of 300-100 K. The obtained value of low-temperature dielectric permittivity is larger than 10000, and that of dielectric loss is lower than 0.018 at f = 1 kHz. The impedance spectra were used to show the grains and grain boundaries effects in SrSn0.2Ti0.8O3 ceramics. The calculated electrical conductivity demonstrates the semiconductor properties of the prepared samples. The results indicate that SrSn0.2Ti0.8O3 ceramics have potential applications in dielectric and electronic devices.

引用

页码：583 / 587

页数：5

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