Low‐temperature sintering and electrical properties of Sr 2 Nb 2 O 7  piezoceramics by CuO addition | Zendy

Chen Tao | Zendy; Liang Ruihong | Zendy; Jiang Kai | Zendy; Hu Zhigao | Zendy; Zhou Zhiyong | Zendy; Dong Xianlin | Zendy

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Low‐temperature sintering and electrical properties of Sr 2 Nb 2 O 7 piezoceramics by CuO addition

Author(s) -

Chen Tao,

Liang Ruihong,

Jiang Kai,

Hu Zhigao,

Zhou Zhiyong,

Dong Xianlin

Publication year - 2017

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.14797

Subject(s) - sintering , materials science , raman spectroscopy , ceramic , perovskite (structure) , octahedron , phase (matter) , mineralogy , analytical chemistry (journal) , crystallography , crystal structure , metallurgy , chemistry , physics , organic chemistry , chromatography , optics

Effects of 0.5 wt% CuO addition on the sintering, structural and electrical properties of perovskite layer structured (PLS) Sr 2 Nb 2 O 7 ceramics prepared by solid‐state reaction method are investigated. The addition of CuO is beneficial to the liquid phase bridge formation at sintering process, leading to lower sintering temperature of 1180°C and larger bulk density up to 98%. Meanwhile, CuO modified Sr 2 Nb 2 O 7 ceramics show a remarkable d 33 of (1.1 ± 0.1) pC/N while still with a very high T c of (1340 ± 2)°C. Raman spectra indicate that the improvement of piezoelectricity could be attributed to the rotation and/or distortion of oxygen octahedron caused by possible Cu 2+ substitution at the A‐sites of Sr 2 Nb 2 O 7 .

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