Influences of Different Calcining Method on the Characteristics of 0.65(K0.5Bi0.5TiO3)–0.35BaTiO3 Ceramics

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Abstract:

0.65(K0.5Bi0.5)TiO3–0.35BaTiO3 (0.65 KBT-0.35 BT3) ceramic was synthesized using a conventional calcination process (CC-process), and using a two-step calcination process that combined hydrothermal and CC processes (HT-CC-process). The effects of these two different calcination processes on the physical and dielectric properties of 0.65 KBT-0.35 BT3 ceramics were recorded and analyzed. When the CC-process was used, secondary phases—namely, BaBi4Ti4O15, K2TiO3, and K4Ti3O8—were observed in the XRD patterns of 0.65 KBT-0.35 BT3 ceramics. When the HT-CC-process was used, only the (K0.5Bi0.5)TiO3 (or (K0.5Bi0.5, Ba)TiO3) phase was observed in the XRD patterns, with no secondary phases. Due to the secondary phases, the CC-process 0.65 KBT-0.35 BT3 ceramic had lower dielectric peaks and broader temperature-dielectric constant curve than the 0.65 KBT-0.35 BT3 ceramic synthesized using the HT-CC-process.

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Advanced Materials Research (Volumes 1004-1005)

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429-433

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August 2014

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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