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Cerium Titanate (Ce 2 Ti 2 O 7 ): A Ferroelectric Ceramic with Perovskite‐Like Layered Structure ( PLS )
Author(s) -
Gao Zhipeng,
Liu Lixin,
Han Xu,
Meng Xiangfu,
Cao Linhong,
Ma Guohua,
Liu Yusheng,
Yang Jia,
Xie Qinghai,
He Hongliang
Publication year - 2015
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.13854
Subject(s) - materials science , curie temperature , differential scanning calorimetry , bismuth titanate , perovskite (structure) , ferroelectricity , ceramic , analytical chemistry (journal) , sintering , mineralogy , poling , cerium , argon , phase (matter) , composite material , dielectric , crystallography , metallurgy , chemistry , thermodynamics , optoelectronics , physics , organic chemistry , chromatography , ferromagnetism , quantum mechanics
A perovskite‐like layer‐structured compound, Ce 2 Ti 2 O 7 , was prepared in the argon atmosphere using solid reaction process. Single phase and dense Ce 2 Ti 2 O 7 ceramic was fabricated by high‐pressure sintering at 4 GPa and 1100°C. This compound is unstable in oxygen/air when temperature is above 400°C, but it is stable under argon/vacuum. Differential scanning calorimetry result shown Ce 2 Ti 2 O 7 has a phase transition at 1073°C, which might be the Curie point. The ferroelectricity of Ce 2 Ti 2 O 7 was confirmed by the piezoelectric activity after poling ( d 33 = 0.4 ± 0.2 pC/N) for the first time.
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