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Effect of SrZrO 3 substitution on structural and electrical properties of lead‐free Bi 0.5 Na 0.5 TiO 3 –BaTiO 3 ceramics
Author(s) -
Maqbool Adnan,
Hussain Ali,
Rahman Jamil Ur,
Park Jong Kyu,
Park Tae Gone,
Song Jae Sung,
Kim Myong Ho
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.201330564
Subject(s) - dielectric , materials science , ferroelectricity , ceramic , perovskite (structure) , piezoelectricity , polarization (electrochemistry) , analytical chemistry (journal) , ferroelectric ceramics , mineralogy , crystallography , composite material , chemistry , optoelectronics , chromatography
In this study, a new lead‐free ceramic system of (1– x )Bi 0.5 Na 0.5 TiO 3 –0.065BaTiO 3 – x SrZrO 3 BNBT–SZ100 x (with x = 0–0.10) was prepared by a conventional solid‐state reaction method and its structural and electrical properties were studied. XRD analysis revealed the formation of pure perovskite phase for all ceramics. The temperature dependence of the dielectric curves showed that the maximum dielectric constant temperature ( T m ) shifted towards lower temperatures and the curves become more diffuse with increasing amount of SZ addition. The ferroelectric curves indicated a disruption of ferroelectric order upon SZ addition into BNBT ceramics. A maximum value of remnant polarization (30 µC cm −2 ), piezoelectric constant (197 pC N −1 ) and electromechanical coupling coefficient (29.4%) was observed for SZ1 ceramics.