Processing and electromechanical properties of high‐coercive field ZnO‐doped PIN‐PZN‐PT ceramics | Zendy

Brova Michael J. | Zendy; Watson Beecher H. | Zendy; Walton Rebecca L. | Zendy; Kupp Elizabeth R. | Zendy; Fanton Mark A. | Zendy; Meyer Richard J. | Zendy; Messing Gary L. | Zendy

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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.

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