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Investigation of dielectric and piezoelectric properties in aliovalent Eu 3+ ‐modified Pb(Mg 1/3 Nb 2/3 )O 3 ‐PbTiO 3 ceramics
Author(s) -
Guo Qinghu,
Hou Lintao,
Li Fei,
Xia Fangquan,
Wang Pengbin,
Hao Hua,
Sun Huajun,
Liu Hanxing,
Zhang Shujun
Publication year - 2019
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.16653
Subject(s) - piezoelectricity , dielectric , materials science , sintering , ceramic , ferroelectricity , analytical chemistry (journal) , doping , crystallite , mineralogy , dielectric loss , composite material , metallurgy , optoelectronics , chemistry , chromatography
Rare earth (Eu 3+ )‐modified Pb(Mg 1/3 Nb 2/3 )O 3 ‐PbTiO 3 (PMN‐PT) polycrystalline ferroelectric ceramics were fabricated by high‐temperature solid‐state sintering, the phase structure, dielectric and piezoelectric properties were investigated. Eu 3+ addition was found to significantly improve dielectric and piezoelectric properties of PMN‐PT, where the optimized properties were achieved for the composition of 2.5 mol%Eu: 0.72PMN‐0.28PT, with the piezoelectric d 33 = 1420 pC/N, dielectric ε r = 12 200 and electromechanical k 33 = 0.78, respectively. All these results indicate that the Eu 3+ ‐doped PMN‐PT ceramics are promising candidates for high‐performance room‐temperature piezoelectric devices.