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dc.contributor.authorLv, Xiang
dc.contributor.authorZhang, Nan
dc.contributor.authorWu, Jiagang
dc.contributor.authorZhang, Xixiang
dc.date.accessioned2020-07-26T06:20:35Z
dc.date.available2020-07-26T06:20:35Z
dc.date.issued2020-07-25
dc.date.submitted2020-03-19
dc.identifier.citationLv, X., Zhang, N., Wu, J., & Zhang, X. (2020). The Role of Adding Bi0.5A0.5ZrO3 in Affecting Orthorhombic-Tetragonal Phase Transition Temperature and Electrical Properties in Potassium Sodium Niobate Ceramics. Acta Materialia. doi:10.1016/j.actamat.2020.07.053
dc.identifier.issn1359-6454
dc.identifier.doi10.1016/j.actamat.2020.07.053
dc.identifier.urihttp://hdl.handle.net/10754/664390
dc.description.abstractBy studying the alone and synergetic effects of Zr4+ and Bi3+ on potassium sodium niobate ((K, Na)NbO3, KNN) ceramics, we revealed how Bi0.5A0.5ZrO3 (A = K, Na, Ag, and (Na0.82K0.18)) reduces the orthorhombic-tetragonal phase transition temperature (TO–T) of KNN ceramics. Investigations into the alone effects reveal that aliovalent substitutions on K+/Na+ (Nb5+) with Bi3+ (Zr4+) inevitably destroy long-range ordering (LRO) and thus worsen piezo/ferroelectric properties. Despite this, Zr4+ can replace Nb5+ within a high content, remain an orthorhombic (O) phase, and slightly increase TO–T. Although substituting on K+/Na+ with Bi3+ decreases TO–T, it already significantly destroyed LRO before shifting TO–T to room temperature. Then, investigations into the synergetic effects show that Zr4+ acts as a buffer, Bi3+ is an accelerator, and A+ is a stabilizer. The buffer can exist in KNN ceramics within a high content and neutralizes the charges caused by the accelerator that concentrates on decreasing TO–T, and the stabilizer compensates for the stability of the perovskite phase. Their synergetic effects explain why Bi0.5A0.5ZrO3 can gradually reduce the TO–T of KNN ceramics without significantly destroying LRO. Therefore, this work helps understand how Bi0.5A0.5ZrO3 decreases TO–T and further design the phase boundary for KNN ceramics.
dc.description.sponsorshipDr. Lv and Prof. Zhang thank the support from King Abdullah University of Science and Technology (KAUST). Prof. Wu thanks the support from the National Natural Science Foundation of China (Grant no. 51722208) and the Key Technologies Research and Development Program of Sichuan Province (Grant no. 2018JY0007).
dc.publisherElsevier BV
dc.relation.urlhttps://linkinghub.elsevier.com/retrieve/pii/S1359645420305619
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in Acta Materialia. 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 Acta Materialia, [, , (2020-07-25)] DOI: 10.1016/j.actamat.2020.07.053 . © 2020. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.titleThe Role of Adding Bi0.5A0.5ZrO3 in Affecting Orthorhombic-Tetragonal Phase Transition Temperature and Electrical Properties in Potassium Sodium Niobate Ceramics
dc.typeArticle
dc.contributor.departmentDivision of Physical Science and Engineering, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia.
dc.contributor.departmentMaterial Science and Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalActa Materialia
dc.rights.embargodate2021-07-25
dc.eprint.versionPost-print
dc.contributor.institutionDepartment of Materials Science, Sichuan University, Chengdu 610065, P. R. China.
kaust.personLv, Xiang
kaust.personZhang, Xixiang
dc.date.accepted2020-07-21
refterms.dateFOA2020-07-26T06:21:29Z


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