SM掺杂CeO2陶瓷的输运性质

IF 0.9 4区 材料科学 Q3 MATERIALS SCIENCE, CERAMICS
S. Ramesh
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引用次数: 3

摘要

采用麦芽糖-果胶改性溶胶法制备了纯(CeO2)和Sm掺杂(Ce0.8Sm0.2O2-?)氧化铈。将压球在1300℃下烧结,制备出相对密度为bb0 ~ 96%TD的致密陶瓷样品。Ce0.8Sm0.2O2-?用XRD对样品进行了分析。用拉曼光谱研究了sm掺杂效应。用FE-SEM记录了显微结构图像。用阻抗谱法测定了材料的电性能。结合能和迁移能由介质损耗正切计算得到。应用琼舍尔幂律研究了电导率的频率变化。电模量研究证实载流子遵循跳变机制。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Transport properties of SM doped CeO2 ceramics
Pure (CeO2) and Sm doped (Ce0.8Sm0.2O2-?) ceria were synthesized by the maltose and pectin-modified solgel process. The dense ceramic samples, with relative density of >96%TD, were prepared by sintering of the pressed pellets at 1300?C for 6 h. The structure and phase of Ce0.8Sm0.2O2-? samples were analysed by XRD method. Raman spectroscopy studies were carried out to study the Sm-doping effect. The microstructural images were recorded by FE-SEM. The electrical properties were measured by impedance spectroscopy. The association and the migration energies were calculated from the dielectric loss tangent. The Jonscher power law was applied to study the frequency variation of electrical conductivity. The electricmodulus studies confirm that the charge carriers follow the hopping mechanism.
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来源期刊
Processing and Application of Ceramics
Processing and Application of Ceramics MATERIALS SCIENCE, CERAMICS-
CiteScore
1.90
自引率
9.10%
发文量
14
审稿时长
10 weeks
期刊介绍: Information not localized
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