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In this work, bismuth sodium titanate (Bi0.5Na0.5)TiO3 (BNT) and praseodymium (Pr)-doped BNT weresuccessfully produced using the soft combustion technique. The effects of Pr doping on stoichiometry,microstructure, density and dielectric properties were studied. Pure Pr-doped BNT was obtained in allsamples containing 5, 10 and 20 mol% Pr after calcination at 800 ◦C for 3 h. The produced powders werethen pressed into pellets and sintered at 1100 ◦C for 3 h. The very similar ionic radii of Pr3+ with Bi3+and Na+ made it possible to substitute both Bi and Na. The crystallite size and grain size decreasedwith increasing Pr amount because Pr acted as grain growth inhibitor, both for calcined powders andfor sintered pellets. Maximum density was obtained in 5 mol% Pr-doped BNT, beyond which densitydecreased. The maximum dielectric constant of 756 was obtained in 5 mol% Pr-doped BNT and decreasedat higher levels of Pr doping. Pr doped into BNT also caused a decrease in dielectric loss.
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