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Evidence for the suppression of intermediate anti-ferroelectric ordering and observation of hardening mechanism in Na1/2
ceramics through cobalt substitution
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Co-ion (5 mol %) substitution in Na 1/2Bi1/2TiO3 (NBT) host lattice and their effects on the structural, ferroelectric and dielectric behavior has been investigated thoroughly in this present study. The substituted Co-ion at Ti-site acts an acceptor type doping and hardens (i.e., increase in coercivity ) the system without any noticeable change in the remanent polarization values. However, the intermediate antiferroelectric (AFE) ordering which exists between 200 °C–280 °C in NBT system has been suppressed due to Co-ion substitution, which is an interesting feature for device applications.
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