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Processing and electromechanical properties of high‐coercive field ZnO‐doped PIN‐PZN‐PT ceramics
Author(s) -
Brova Michael J.,
Watson Beecher H.,
Walton Rebecca L.,
Kupp Elizabeth R.,
Fanton Mark A.,
Meyer Richard J.,
Messing Gary L.
Publication year - 2020
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.17181
Subject(s) - materials science , sintering , tetragonal crystal system , curie temperature , perovskite (structure) , coercivity , doping , ceramic , analytical chemistry (journal) , mineralogy , crystallography , condensed matter physics , metallurgy , crystal structure , optoelectronics , chemistry , physics , chromatography , ferromagnetism
This study explores sintering and piezoelectricity of ZnO‐doped perovskite Pb(In 1/2 Nb 1/2 )O 3 ‐Pb(Zn 1/3 Nb 2/3 )O 3 ‐PbTiO 3 (PIN‐PZN‐PT) ceramics. The enhanced densification of ZnO‐doped PIN‐PZN‐PT is attributed to the formation of oxygen vacancies by the incorporation of Zn 2+ into the perovskite B‐site and increased rate of bulk diffusion relative to undoped PIN‐PZN‐PT. Incorporation of Zn 2+ into the perovskite lattice increased the tetragonal character of PIN‐PZN‐PT as demonstrated by tetragonal peak splitting and increased Curie temperature. Sintering in flowing oxygen reduced the solubility of Zn 2+ in the perovskite lattice and resulted in rhombohedral PIN‐PZN‐PT. Sintering in oxygen prevented secondary phase formation which resulted in a high‐piezoelectric coefficient (d 33 – 550 pC/N), high‐coercive field (E c – 13 kV/cm), and high‐rhombohedral to tetragonal phase transition temperature (T r‐t – 165°C). We conclude that ZnO‐doped PIN‐PZN‐PT ceramics are excellent candidates for high‐power transducer applications.