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Effects of dopants on the synthesis of Pb(Mg1/3Nb2/3)O3-PbTiO3 ceramics by the reaction-sintering method

✍ Scribed by Fang, Bijun ;Ding, Chenlu ;Wu, Jian ;Du, Qingbo ;Ding, Jianning

Publisher
John Wiley and Sons
Year
2011
Tongue
English
Weight
783 KB
Volume
208
Category
Article
ISSN
0031-8965

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✦ Synopsis

Abstract

Sintering aid‐doped 0.8Pb(Mg~1/3~Nb~2/3~)O~3~‐0.2PbTiO~3~ (0.8PMN‐0.2PT) relaxor‐based ferroelectric ceramics were prepared by the reaction‐sintering method. X‐ray diffraction (XRD) measurement, SEM observation, and density measurement confirmed that the Li~2~CO~3~‐ and CuO‐doped 0.8PMN‐0.2PT ceramics exhibit pure rhombohedral perovskite structure, rather homogenous micromorphology and high relative density. As compared to the undoped 0.8PMN‐0.2PT ceramics, the Li~2~CO~3~‐ and CuO‐doped 0.8PMN‐0.2PT ceramics exhibit enhanced dielectric diffused and frequency dispersion, improved ferroelectric property, and piezoelectric property, while as the sintering temperature is decreased greatly. Therefore, Li~2~CO~3~ and CuO are effective sintering aids for the PMN‐PT ceramics prepared by the reaction‐sintering method, which exhibit promising applications in the electronic ceramic industries.

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