NDLI: Improved Electromechanical Response in Rhombohedral BaTiO$

Content Provider	Springer Nature Link
Author	Avrahami, Y. Tuller, H. L.
Copyright Year	2004
Abstract	Zr-, Hf-, and KNb-doped BaTiO$_{3}$ materials were prepared in a composition range that stabilizes the rhombohedral phase above room temperature. These materials were prepared as bulk polycrystalline material using standard solid-state reaction methods. X-ray diffraction was used to confirm the existence of a stable rhombohedral phase while dielectric constant measurements confirmed the expected phase transition temperatures. A piezoelectric coefficient of d$_{33}$ = 290–470 pC/N was obtained for Zr- and Hf-doped BaTiO$_{3}$, compared with d$_{33}$ = 75 pC/N for pure BaTiO$_{3}$. An electrostrictive coefficient of Q$_{33}$ = 0.37 m$^{4}$/C$^{2}$ was obtained for the KNb-doped material, compared with Q$_{33}$ = 0.11 m$^{4}$/C$^{2}$ for pure BaTiO$_{3}$. The maximum strain measured for the doped samples was 5–10 times higher than that of pure BaTiO$_{3}$.
Starting Page	463
Ending Page	469
Page Count	7
File Format	PDF
ISSN	13853449
Journal	Journal of Electroceramics
Volume Number	13
Issue Number	1-3
e-ISSN	15738663
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2004-01-01
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	piezoelectric barium-titanate dielectric high strain Polymer Sciences Optical and Electronic Materials Characterization and Evaluation Materials Ceramics, Glass, Composites, Natural Methods Crystallography
Content Type	Text
Resource Type	Article
Subject	Ceramics and Composites Materials Chemistry Mechanics of Materials Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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