Processing and Ferroelectric Property of Lead-Free KBa2Nb5O15 Piezoceramics

T. Yoshifuji; Kenichi Kakimoto; Hitoshi Ohsato

doi:10.4028/www.scientific.net/AMR.11-12.113

Paper Titles

Crystallography and R&D for Material Science from Our Research: Electroceramics
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Structure and Electrical Properties of Highly (100)-Oriented Ba(Zr_0.05Ti_0.95)O₃ Films Prepared by Chemical Solution Deposition
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Microstructure and Dielectric Property of KNbO₃ Ceramics with KVO₃ Addition
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LPE Growth of Textured KNbO₃ Film Using SrTiO₃ Substrate and V₂O₅ Flux
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Processing and Ferroelectric Property of Lead-Free KBa₂Nb₅O₁₅ Piezoceramics
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Enhancement of Electric Field inside Metallodielectric Metamaterial
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Continuous Path Tracking System of High Precision Stage Using Synchronous Piezoelectric Device Driver
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Hydrogen and Oxygen Chemical Potential Dependence of Electrical Conductivity of SrCe_0.95Yb_0.05O_3-x
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Thermal Conductivity of Mullite/Al₂O₃ Ceramics Sintered with Li₂O, CaO and Y₂O₃
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 11-12Processing and Ferroelectric Property of Lead-Free...

Processing and Ferroelectric Property of Lead-Free KBa₂Nb₅O₁₅ Piezoceramics

Abstract:

Dense KBa2Nb5O15 ceramics have been first prepared from the accurate treatment of powder mixing under ordinary pressure-less sintering. The sample prepared by the calcined powder mixed by a planetary ball-milling showed a relatively high density of 94.7% and a homogeneous microstructure resulting from the inhibition of abnormal grain growth. The electric properties of KBa2Nb5O15 ceramics was controlled by the preferential crystallographic orientation. The remanent polarization (Pr) of the sample cut parallel to the pressing direction demonstrated above two times larger (2.9 μC/cm2) than that of the perpendicular-cut sample (1.3 μC/cm2) at 150°C.