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Synthesis and characterizations of (1-F) (NBT-BT)-FSBexT ceramics for NVRAM applications
Sridevi Swain,Pawan Kumar 한국물리학회 2016 Current Applied Physics Vol.16 No.9
(1-f) (0.93 Na0.5Bi0.5TiO3-0.07 BaTiO3)-f Sr0.8Bi2.15Ta2O9/(1-f) (NBT-BT)-fSBexT (f ¼ 0, 2, 4, 8, 12, 16 wt %) ferroelectric ceramic samples were synthesized by solid state reaction technique. 1150 C for 4hr was optimized as the sintering temperature for all the ceramic samples. XRD, SEM, dielectric, leakage current, ferroelectric and piezoelectric properties along with the ferroelectric fatigue behaviour under bipolar electrical loading of all the (1-f) (NBT-BT)-fSBexT ceramic samples were studied in detail. Incorporation of SBexT phase into the MPB composition of the NBT-BT system significantly affected the various studied properties. Improvement in leakage current density and better fatigue behaviour were observed in SBexT incorporated NBT-BT ceramic systems.