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High-performance piezoelectric (K,Na,Li)(Nb,Ta,Sb)O3 single crystals by oxygen annealing

hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorLIU, Hairui
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
hal.structure.identifierInstitut Lumière Matière [Villeurbanne] [ILM]
dc.contributor.authorVEBER, Philippe
hal.structure.identifierInstitute of Materials Science
dc.contributor.authorRÖDEL, Jürgen
hal.structure.identifierFEE
dc.contributor.authorRYTZ, Daniel
hal.structure.identifierDepartment of Chemistry
dc.contributor.authorFABRITCHNYI, Pavel
hal.structure.identifierDepartment of Chemistry
dc.contributor.authorAFANASOV, Mikhail
hal.structure.identifierMaterials Science and Technology Division
dc.contributor.authorPATTERSON, Eric A.
hal.structure.identifierInstitute of Materials Science
dc.contributor.authorFRÖMLING, Till
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorMAGLIONE, Mario
hal.structure.identifierInstitute of Materials Science
dc.contributor.authorKORUZA, Jurij
dc.date.issued2018-04
dc.identifier.issn1359-6454
dc.description.abstractEnFerroelectric single crystals exhibit the largest known piezoelectric constants and therefore show high potential for application in electronic devices, including sensors, actuators, and transducers. Their large properties, however, can only be fully exploited if the behavior is not influenced by lattice defects, formed during high-temperature processing. Such defects can inhibit domain-wall movement, increase leakage currents, and are predominantly responsible for the poor performance of the emerging ferroelectric crystals. Here, an approach to considerably enhance the piezoelectric and ferroelectric properties of (K,Na,Li)(Nb,Ta,Sb)O3 crystals by oxygen annealing is investigated. As compared to the non-annealed crystals, polarization, strain, and piezoelectric constant of the annealed sample were enhanced by a factor of two, resulting in an outstanding room-temperature value of piezoelectric constant d33 = 732 pC/N and a peak value of d33 = 1431 pm/V at the orthorhombic-tetragonal transition. The behavior was analyzed using electromechanical measurements, Mössbauer spectroscopy, and impedance spectroscopy, revealing decreased concentrations of both oxygen vacancies and Sb3+ ions after annealing. The findings indicate that the control of the defect chemistry enables these ferroelectric (K,Na)NbO3-based single crystals to outperform their polycrystalline counterparts and reach the values of lead-containing compositions. Moreover, the present strategy enables further detailed studies of the inherent crystal anisotropy and the possibilities for domain engineering.
dc.language.isoen
dc.publisherElsevier
dc.subject.enSingle crystals
dc.subject.enDefects
dc.subject.enPiezoelectricity
dc.subject.enFerroelectricity
dc.subject.enMössbauer spectroscopy
dc.title.enHigh-performance piezoelectric (K,Na,Li)(Nb,Ta,Sb)O3 single crystals by oxygen annealing
dc.typeArticle de revue
dc.identifier.doi10.1016/j.actamat.2018.02.026
dc.subject.halChimie/Matériaux
bordeaux.journalActa Materialia
bordeaux.page499-507
bordeaux.volume148
bordeaux.peerReviewedoui
hal.identifierhal-01731050
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01731050v1
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