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Dielectric and ferroelectric properties of the sol‐gel–derived Zr‐doped Ba 0.7 Sr 0.3 TiO 3 polycrystalline ceramic systems
Author(s) -
Mahmood Asad,
Naeem Abdul,
Iqbal Yaseen,
Ullah Asad
Publication year - 2017
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/ijac.12678
Subject(s) - materials science , dielectric , ceramic , ferroelectricity , crystallite , hysteresis , sol gel , analytical chemistry (journal) , doping , phase (matter) , phase transition , mineralogy , condensed matter physics , composite material , nanotechnology , optoelectronics , metallurgy , chromatography , physics , organic chemistry , chemistry
Ba 0.7 Sr 0.3 Zr x Ti 1− x O 3 ( BSZT ; where x =0.02, 0.04, 0.06, 0.08, 0.1) ceramics were processed through a sol‐gel method at 1450°C for 6 h. All the samples showed a diffuse phase transition which might be due to the presence of polar nanoregions, those associated with the composition inhomogeneity in the BSZT ceramics. The sample with x =0.02 exhibited a dielectric constant (ɛ=23714) which successively decreased with increasing x up to 8569 for the sample with x =0.1 around T c measured at 10 kH z. Ceramic samples showed a ferroelectric hysteresis behavior similar to relaxor materials.