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Mn‐ and Mn/Cu‐doped PIN‐PMN‐PT piezoelectric ceramics for high‐power transducers
Author(s) -
Watson Beecher H.,
Brova Michael J.,
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.17347
Subject(s) - materials science , doping , figure of merit , piezoelectricity , ceramic , dielectric loss , manganese , dielectric , coercivity , analytical chemistry (journal) , ferroelectricity , grain size , mineralogy , composite material , optoelectronics , metallurgy , condensed matter physics , chemistry , physics , chromatography
The effects of acceptor doping with manganese as either MnO 2 or MnNb 2 O 6 (MnN) with CuO on the dielectric, ferroelectric, and piezoelectric properties of PIN‐PMN‐PT ceramics were investigated. The 2% MnNb 2 O 6 ‐doped PIN‐PMN‐PT (6Pb(Mn 1/3 Nb 2/3 )O 3 ‐25Pb(In 1/2 Nb 1/2 )O 3 ‐34Pb(Mg 1/3 Nb 2/3 )O 3 ‐35PbTiO 3 ) ceramics possessed hard properties such as high coercive field ( E C ) of 11.7 kV/cm, low dielectric loss (tan δ ) of 0.7%, and high electromechanical quality factor ( Q M ) of 1011. These properties were diminished in MnO 2 ‐doped ceramics because of lower oxygen vacancy defect concentration, and exaggerated grain growth resulted in >20 µm grain size. Co‐doping with 2 mol% MnNb 2 O 6 and 0.5 mol% CuO retained hardened properties such as high E C of 9.6 kV/cm, low tan δ of 0.6%, and high Q M of 1029. MnNb 2 O 6 ‐doped and MnNb 2 O 6 + Cu co‐doped ceramics display excellent figures of merit for resonance and off‐resonance applications as well as high energy conversion efficiencies which make them promising candidates for high‐power transducer elements.