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Effect of Antimony Concentration on the Crystalline Structure, Dielectric, and Piezoelectric Properties of (Na 0.5 K 0.5 ) 0.945 Li 0.055 Nb 1− x Sb x O 3 Solid Solutions
Author(s) -
Li Huidong,
Shih Wan Y.,
Shih WeiHeng
Publication year - 2007
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/j.1551-2916.2007.01875.x
Subject(s) - antimony , piezoelectricity , tetragonal crystal system , analytical chemistry (journal) , grain size , dielectric , materials science , phase (matter) , mineralogy , piezoelectric coefficient , crystal structure , chemistry , crystallography , composite material , metallurgy , optoelectronics , organic chemistry , chromatography
The effect of antimony concentration on the piezoelectric properties of (Na 0.5 K 0.5 ) 0.945 Li 0.055 Nb 1− x Sb x O 3 was examined for 0≤ x ≤0.1. The piezoelectric coefficients exhibited a maximum, d 33 =240 pC/N and d 31 =−82 pC/N at x =0.04, coinciding with the maximum of the grain size and the apparent density at x =0.04. The grain size, the apparent density, and the piezoelectric coefficients decreased with an increasing x at higher x likely due to the onset of a Sb‐rich second phase. The weight fraction of the tetragonal phase increased with an increasing x to almost unity at x =0.1, likely also contributing to the decrease in the piezoelectric coefficients at higher x .