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Low‐temperature sintering and enhanced piezoelectric properties of random and textured PIN – PMN – PT ceramics with Li 2 CO 3
Author(s) -
Wei Dandan,
Wang Hong
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.14657
Subject(s) - materials science , sintering , piezoelectricity , microstructure , dielectric , ceramic , piezoelectric coefficient , grain size , ferroelectricity , composite material , ternary operation , permittivity , analytical chemistry (journal) , mineralogy , chemistry , optoelectronics , chromatography , computer science , programming language
Low‐temperature sintered random and textured 36 PIN –30 PMN –34 PT piezoelectric ceramics were successfully synthesized at a temperature as low as 950°C using Li 2 CO 3 as sintering aids. The effects of Li 2 CO 3 addition on microstructure, dielectric, ferroelectric, and piezoelectric properties in 36 PIN –30 PMN –34 PT ternary system were systematically investigated. The results showed that the grain size of the specimens increased with the addition of sintering aids. The optimum properties for the random samples were obtained at 0.5 wt% Li 2 CO 3 addition, with piezoelectric constant d 33 of 450 pC /N, planar electromechanical coupling coefficient k p of 49%, peak permittivity ε max of 25 612, remanent polarization P r of 36.3 μC/cm 2 . Moreover, the low‐temperature‐sintered textured samples at 0.5 wt% Li 2 CO 3 addition exhibited a higher piezoelectric constant d 33 of 560 pC /N. These results indicated that the low‐temperature‐sintered 36 PIN –30 PMN –34 PT piezoelectric ceramics were very promising candidates for the multilayer piezoelectric applications.