A New Method to Improve the Electrical Properties of KNN-based Ceramics: Tailoring Phase Fraction

Handle URI:
http://hdl.handle.net/10754/625357
Title:
A New Method to Improve the Electrical Properties of KNN-based Ceramics: Tailoring Phase Fraction
Authors:
Lv, Xiang; Wu, Jiagang; Zhu, Jianguo; Xiao, Dingquan; Zhang, Xixiang ( 0000-0002-3478-6414 )
Abstract:
Although both the phase type and fraction of multi-phase coexistence can affect the electrical properties of (K,Na)NbO3 (KNN)-based ceramics, effects of phase fraction on their electrical properties were few concerned. In this work, through changing the calcination temperature of CaZrO3 powders, we successfully developed the 0.96K0.5Na0.5Nb0.96Sb0.04O3-0.01CaZrO3-0.03Bi0.5Na0.5HfO3 ceramics containing a wide rhombohedral-tetragonal (R-T) phase coexistence with the variations of T (or R) phase fractions. It was found that higher T phase fraction can warrant a larger piezoelectric constant (d33) and d33 also showed a linear variation with respect to tetragonality ratio (c/a). More importantly, a number of domain patterns were observed due to high T phase fraction and large c/a ratio, greatly benefiting the piezoelectricity. In addition, the improved ferroelectric fatigue behavior and thermal stability were also shown in the ceramics containing high T phase fraction. Therefore, this work can bring a new viewpoint into the physical mechanism of KNN-based ceramics behind R-T phase coexistence.
KAUST Department:
Physical Sciences and Engineering (PSE) Division
Citation:
Lv X, Wu J, Zhu J, Xiao D, Zhangb X (2017) A New Method to Improve the Electrical Properties of KNN-based Ceramics: Tailoring Phase Fraction. Journal of the European Ceramic Society. Available: http://dx.doi.org/10.1016/j.jeurceramsoc.2017.08.016.
Publisher:
Elsevier BV
Journal:
Journal of the European Ceramic Society
Issue Date:
18-Aug-2017
DOI:
10.1016/j.jeurceramsoc.2017.08.016
Type:
Article
ISSN:
0955-2219
Sponsors:
Authors gratefully acknowledge the supports of the National Science Foundation of China (NSFC Nos., 51332003 and 51272164) and King Abdullah University of Science and Technology. We thank Mrs. Wang Hui for measuring FE-SEM images.
Additional Links:
http://www.sciencedirect.com/science/article/pii/S0955221917305551
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorLv, Xiangen
dc.contributor.authorWu, Jiagangen
dc.contributor.authorZhu, Jianguoen
dc.contributor.authorXiao, Dingquanen
dc.contributor.authorZhang, Xixiangen
dc.date.accessioned2017-08-21T06:28:03Z-
dc.date.available2017-08-21T06:28:03Z-
dc.date.issued2017-08-18en
dc.identifier.citationLv X, Wu J, Zhu J, Xiao D, Zhangb X (2017) A New Method to Improve the Electrical Properties of KNN-based Ceramics: Tailoring Phase Fraction. Journal of the European Ceramic Society. Available: http://dx.doi.org/10.1016/j.jeurceramsoc.2017.08.016.en
dc.identifier.issn0955-2219en
dc.identifier.doi10.1016/j.jeurceramsoc.2017.08.016en
dc.identifier.urihttp://hdl.handle.net/10754/625357-
dc.description.abstractAlthough both the phase type and fraction of multi-phase coexistence can affect the electrical properties of (K,Na)NbO3 (KNN)-based ceramics, effects of phase fraction on their electrical properties were few concerned. In this work, through changing the calcination temperature of CaZrO3 powders, we successfully developed the 0.96K0.5Na0.5Nb0.96Sb0.04O3-0.01CaZrO3-0.03Bi0.5Na0.5HfO3 ceramics containing a wide rhombohedral-tetragonal (R-T) phase coexistence with the variations of T (or R) phase fractions. It was found that higher T phase fraction can warrant a larger piezoelectric constant (d33) and d33 also showed a linear variation with respect to tetragonality ratio (c/a). More importantly, a number of domain patterns were observed due to high T phase fraction and large c/a ratio, greatly benefiting the piezoelectricity. In addition, the improved ferroelectric fatigue behavior and thermal stability were also shown in the ceramics containing high T phase fraction. Therefore, this work can bring a new viewpoint into the physical mechanism of KNN-based ceramics behind R-T phase coexistence.en
dc.description.sponsorshipAuthors gratefully acknowledge the supports of the National Science Foundation of China (NSFC Nos., 51332003 and 51272164) and King Abdullah University of Science and Technology. We thank Mrs. Wang Hui for measuring FE-SEM images.en
dc.publisherElsevier BVen
dc.relation.urlhttp://www.sciencedirect.com/science/article/pii/S0955221917305551en
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in Journal of the European Ceramic Society. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of the European Ceramic Society, [, , (2017-08-18)] DOI: 10.1016/j.jeurceramsoc.2017.08.016 . © 2017. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/en
dc.subjectLead-free piezoceramicsen
dc.subjectMultiphase coexistenceen
dc.subjectPhase fractionen
dc.subjectElectrical propertiesen
dc.titleA New Method to Improve the Electrical Properties of KNN-based Ceramics: Tailoring Phase Fractionen
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.identifier.journalJournal of the European Ceramic Societyen
dc.eprint.versionPost-printen
dc.contributor.institutionDepartment of Materials Science, Sichuan University, Chengdu 610064, Chinaen
kaust.authorLv, Xiangen
kaust.authorZhang, Xixiangen
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