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Effect of the orthorhombic/rhombohedral volume ratio on the piezoelectric properties of BaCa x TiO 3 –0.04LiF ceramics
Author(s) -
Zhao Lei,
Zhang BoPing,
Zhou PengFei,
Zhao XiaoKun,
Zhu LiFeng
Publication year - 2014
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.201329379
Subject(s) - trigonal crystal system , orthorhombic crystal system , rietveld refinement , materials science , piezoelectricity , phase (matter) , crystal structure , ceramic , symmetry (geometry) , crystallography , sintering , relative density , mineralogy , metallurgy , composite material , chemistry , mathematics , geometry , organic chemistry
BaCa x TiO 3 –0.04LiF (0.010 ≤ x ≤ 0.045) ceramics were prepared by normal sintering at 1100 °C in air. A two‐phase coexisted region across orthorhombic and rhombohedral symmetry was designed by refining the components. The detailed phase structure was analyzed quantitatively by the Rietveld refinement. BaCa 0.035 TiO 3 –0.04LiF ceramic showed better properties with d 33 = 354 pC N −1 , k p = 39%, Q m = 314, and T C = 65 °C, in which the relative proportion of rhombohedral symmetry was 74.86%, the grain size was 6.0 µm and the relative density was 91%, indicating that the synergistic effect of the phase structure, fine grain, and relatively high density contributed to the outstanding piezoelectric properties.