NDLI: Fabrication and piezoelectric properties of (K0.5Na0.5)NbO3-based ceramics doped with Bi-perovskites

Content Provider	IEEE Xplore Digital Library
Author	Suzuki, R. Uraki, S. Kakemoto, H. Wada, S. Tsurumi, T.
Copyright Year	2007
Description	Author affiliation: Tokyo Inst. of Technol., Tokyo (Suzuki, R.; Uraki, S.; Kakemoto, H.)
Abstract	The effect of the addition of Bi-perovskites to $(Li_{0.04}K_{0.52}Na_{0.44})(Nb_{0.84}Ta_{0.1}Sb_{0.06})O_{3}$ (LF4) ceramics was studied to improve the properties of lead-free piezoelectrics. Ceramics with the relative density above 96% were successfully obtained by a solid state reaction process. The changes in lattice parameters indicated that the vacancy concentration at the A-site of the perovskite structure and the tetragonality of the crystal lattice were reduced with the addition of $BiFeO_{3}.$ The addition of $BiFeO_{3}$ changed the LF4 to a soft-piezoelectric. The electrical insulation of the LF4 was improved with the addition of $BiFeO_{3},$ which made a full poling possible under high electric fields. A few mol% of $BiFeO_{3}$ was effective to improve the remanent polarization of the LF4 ceramics and a piezoelectric $d_{33}$ constant of about 358 pm/V was obtained in the 0.4 mol% doped ceramics.
Starting Page	649
Ending Page	650
File Size	2683107
Page Count	2
File Format	PDF
ISBN	9781424413331
ISSN	10994734
DOI	10.1109/ISAF.2007.4393358
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-05-27
Publisher Place	Japan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Fabrication Ceramics Environmentally friendly manufacturing techniques Temperature Piezoelectric polarization Bioceramics Piezoelectric materials Ferroelectric materials Powders Dielectric measurements
Content Type	Text
Resource Type	Article

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