Ayrikyan, Azatuhi ; Rojas, Virginia ; Molina-Luna, Leopoldo ; Acosta, Matias ; Koruza, Jurij ; Webber, Kyle G. (2015)
Enhancing Electromechanical Properties of Lead-Free Ferroelectrics With Bilayer Ceramic/Ceramic Composites.
In: IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 62 (6)
doi: 10.1109/TUFFC.2014.006673
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
The macroscopic electromechanical behavior of lead-free bilayer composites was characterized at room temperature. One layer consisted of a nonergodic relaxor,(Bi1/2 1 Na /2)TiO3–7 , BaTiO3 with an electric-field-induced longrange ferroelectric order, whereas the other is understood to be an ergodic relaxor [(Bi N 1/2 1 a ) /2 TiO3–25SrTiO3] that undergoes a reversible electric-field-induced macroscopic nonpolar-to-polar transition. Microstructural evidence of a bilayer with low diffusion between the two components is also demonstrated. By taking advantage of the different macroscopic strain– and polarization–electric-field responses of the two constituents, internal mechanical and electrical fields can be developed that enhance the unipolar strain over that expected by a rule of mixtures approximation, thereby improving the properties needed for application of such materials to actuator systems. It is possible through further tailoring of the volume fractions and macroscopic properties of the constituents to optimize the electromechanical properties of multilayer lead-free ferroelectrics.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2015 |
| Autor(en): | Ayrikyan, Azatuhi ; Rojas, Virginia ; Molina-Luna, Leopoldo ; Acosta, Matias ; Koruza, Jurij ; Webber, Kyle G. |
| Art des Eintrags: | Bibliographie |
| Titel: | Enhancing Electromechanical Properties of Lead-Free Ferroelectrics With Bilayer Ceramic/Ceramic Composites |
| Sprache: | Englisch |
| Publikationsjahr: | 3 Februar 2015 |
| Verlag: | IEEE |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control |
| Jahrgang/Volume einer Zeitschrift: | 62 |
| (Heft-)Nummer: | 6 |
| DOI: | 10.1109/TUFFC.2014.006673 |
| Kurzbeschreibung (Abstract): | The macroscopic electromechanical behavior of lead-free bilayer composites was characterized at room temperature. One layer consisted of a nonergodic relaxor,(Bi1/2 1 Na /2)TiO3–7 , BaTiO3 with an electric-field-induced longrange ferroelectric order, whereas the other is understood to be an ergodic relaxor [(Bi N 1/2 1 a ) /2 TiO3–25SrTiO3] that undergoes a reversible electric-field-induced macroscopic nonpolar-to-polar transition. Microstructural evidence of a bilayer with low diffusion between the two components is also demonstrated. By taking advantage of the different macroscopic strain– and polarization–electric-field responses of the two constituents, internal mechanical and electrical fields can be developed that enhance the unipolar strain over that expected by a rule of mixtures approximation, thereby improving the properties needed for application of such materials to actuator systems. It is possible through further tailoring of the volume fractions and macroscopic properties of the constituents to optimize the electromechanical properties of multilayer lead-free ferroelectrics. |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Nichtmetallisch-Anorganische Werkstoffe |
| Hinterlegungsdatum: | 03 Nov 2015 10:19 |
| Letzte Änderung: | 08 Dez 2015 16:16 |
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