Abstract
ABSTRACTPotassium sodium niobate (KNN) ceramics were prepared by solid state synthesis followed by liquid phase sintering using V2O5 as a sintering aid. Sintering at 1120 ºC for 4 hours using V2O5 caused significant improvement in relative density with maximum relative density reaching to more than 94%. Dense polycrystalline ceramics having grain size about 2 µm were obtained as a result of liquid phase sintering. Gradual improvement in dielectric constant was observed with increase in V2O5 content coupled with increase in electrical conductivity. Maximum remnant polarization of 18 µC/cm2 was recorded for ceramic sintered with 5 wt% V2O5.
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