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Dielectric properties of high‐ T c ceramics based on BaTiO 3 with (111) texture characteristics
Author(s) -
Kuang S. J.,
Tang X. G.,
Cheng T. D.,
Ding N.,
Liu Q. X.
Publication year - 2009
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.200824367
Subject(s) - materials science , dielectric , ferroelectricity , ceramic , tetragonal crystal system , coercivity , texture (cosmology) , hysteresis , phase transition , perovskite (structure) , permittivity , analytical chemistry (journal) , polarization (electrochemistry) , diffraction , ferroelectric ceramics , mineralogy , phase (matter) , composite material , condensed matter physics , crystallography , optics , optoelectronics , chemistry , image (mathematics) , physics , organic chemistry , chromatography , artificial intelligence , computer science
0.94BaTiO 3 –(0.06– x )Bi 0.5 Li 0.5 TiO 3 – x Bi 0.5 Na 0.5 TiO 3 (abbreviated as BT–BLT–BNT with x = 0, 0.015, 0.03, 0.045, 0.06) ceramics were prepared by the traditional ceramic processing route. The structure, dielectric and ferroelectric properties of the samples were investigated by X‐ray diffraction, the temperature dependence of dielectric permittivity, and hysteresis loop measurements. These results showed that all compositions have the perovskite tetragonal phase structure, and the phase‐transition temperature T c is increasing with increasing x , the T c is 163 °C for x equal 0.06; and the samples have good ferroelectric properties with lower coercive field and higher remanent polarization. BT–BLT–BNT ceramics prove to be a promising candidate for high‐ T c lead‐free ceramics. (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)