The strong influence of bismuth additions to the lead-barium-zirconate-titanate ceramics of Ba/Zr/Ti 25/70/30 composition on grain structure, dielectric properties and dc conductivity is confirmed. The Bi-modified ceramics exhibit classical relaxor ferroelectrics (RF) behaviour similar to the other lead containing perovskites such as lead-lanthanum-zirconate-titanate-type ceramics. Dielectric relaxation typical for the ferroelectric relaxors is observed in the vicinity of diffuse ferroelectric-paraelectric ph…
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