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Effects of dopants on the synthesis of Pb(Mg 1/3 Nb 2/3 )O 3 ‐PbTiO 3 ceramics by the reaction‐sintering method
Author(s) -
Fang Bijun,
Ding Chenlu,
Wu Jian,
Du Qingbo,
Ding Jianning
Publication year - 2011
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.201127041
Subject(s) - sintering , materials science , ceramic , dopant , doping , relative density , dielectric , perovskite (structure) , ferroelectricity , analytical chemistry (journal) , mineralogy , chemical engineering , composite material , chemistry , optoelectronics , organic chemistry , engineering
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.