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Structure and Electrical Properties of Morphotropic Phase Boundary (Na 1/2 Bi 1/2 )TiO 3 ‐PbTiO 3 ‐Bi(Mg 1/2 Ti 1/2 )O 3 Ternary System
Author(s) -
Sun Renbing,
Wang Fang,
Feng Tangfu,
Kong Fengyu,
Luo Haosu
Publication year - 2018
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.201800564
Subject(s) - phase boundary , materials science , tetragonal crystal system , dielectric , ferroelectricity , phase (matter) , ternary operation , solid solution , analytical chemistry (journal) , ceramic , perovskite (structure) , mineralogy , crystallography , metallurgy , physics , chemistry , computer science , programming language , optoelectronics , chromatography , quantum mechanics
The xBi(Mg 0.5 Ti 0.5 )O 3 ‐(0.86−x)(Bi 0.5 Na 0.5 )TiO 3 ‐0.14PbTiO 3 (xBMT‐(0.86−x)NBT‐0.14PT) ( x = 0, 0.02, 0.04, 0.06, 0.08, 0.10, 0.20) ternary solid solution ceramics are fabricated using a conventional solid‐state reaction method. The effect of tetragonality of tetragonal phase and local structure on the dielectric, ferroelectric, and piezoelectric properties is systematically investigated for the compositions near morphotropic phase boundary (MPB). The curves ϵ ( T ) for unpoled x = 0.02, 0.04, 0.06, 0.08 samples exhibit three dielectric anomalies upon heating. With increasing the BMT content, c/a ratio of the tetragonal phase slightly decreases, and the structure turns into pseudocubic phase. The largest values of d 33 and P r are obtained for x = 0.10 sample, being about twice as much as that of the 86NBT‐14PT sample, which can be attributed to the emergence of the nanostructure.