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dc.contributor.authorAktas, O
dc.contributor.authorKangama, M
dc.contributor.authorLinyu, G
dc.contributor.authorCatalan, G
dc.contributor.authorDing, X
dc.contributor.authorZunger, A
dc.contributor.authorSalje, EKH
dc.date.accessioned2021-12-07T00:30:18Z
dc.date.available2021-12-07T00:30:18Z
dc.date.issued2021
dc.identifier.issn2643-1564
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/331242
dc.description.abstractCompound phases often display properties that are symmetry-forbidden relative to their nominal, average crystallographic symmetry, even if extrinsic reasons (defects, strain, imperfections) are not apparent. Here, we investigate macroscopic inversion symmetry breaking in nominally centrosymmetric materials and measure Resonant Piezoelectric Spectroscopy (RPS) and Resonant Ultrasound Spectroscopy (RUS) in 15 compounds, 18 samples, and 21 different phases, including unpoled ferroelectrics, paraelectrics, relaxors, ferroelastics, incipient ferroelectrics, and isotropic materials with low defect concentrations, i.e. NaCl,cfused silica, and CaF2. We exclude the flexoelectric effect as a source of the observed piezoelectricity yetcobserve piezoelectricity in all nominally cubic phases of these samples. By scaling the RPS intensities with those of RUS, we calibrate the effective piezoelectric coefficients using single crystal quartz as standard. Using this scaling we determine the effective piezoelectric modulus in nominally non-piezoelectric phases, finding that the "symmetry-forbidden" piezoelectric effect ranges from 1 pm/V to 10E-5 pm/V. The values for unpoled ferroelectric phases are only slightly higher than those in the paraelectric phase of the same material. The lowest coefficients are well below the detection limit of conventional piezoelectric measurements and demonstrate RPS as an ultra-highly sensitive method to measure piezoelectricity. We suggestt hat symmetry-breaking piezoelectricity in nominally centrosymmetric materials and disordered, unpoled ferroelectrics is ubiquitous.
dc.publisherAmerican Physical Society (APS)
dc.rightsAttribution 4.0 International
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectcond-mat.mtrl-sci
dc.subjectcond-mat.mtrl-sci
dc.titlePiezoelectricity in nominally centrosymmetric phases
dc.typeArticle
dc.publisher.departmentDepartment of Earth Sciences
dc.date.updated2021-12-03T12:12:35Z
prism.publicationNamePhysical Review Research
dc.identifier.doi10.17863/CAM.78687
dcterms.dateAccepted2021-11-11
rioxxterms.versionofrecord10.1103/PhysRevResearch.3.043221
rioxxterms.versionVoR
dc.contributor.orcidSalje, Ekhard [0000-0002-8781-6154]
dc.identifier.eissn2643-1564
rioxxterms.typeJournal Article/Review
pubs.funder-project-idEngineering and Physical Sciences Research Council (EP/P024904/1)
pubs.funder-project-idEuropean Commission Horizon 2020 (H2020) Marie Sk?odowska-Curie actions (861153)
pubs.funder-project-idEngineering and Physical Sciences Research Council (EP/L014793/1)
cam.issuedOnline2021-12-27
cam.orpheus.success2022-09-07: VoR added to Apollo record
cam.orpheus.counter4
cam.depositDate2021-12-03
pubs.licence-identifierapollo-deposit-licence-2-1
pubs.licence-display-nameApollo Repository Deposit Licence Agreement


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Attribution 4.0 International
Except where otherwise noted, this item's licence is described as Attribution 4.0 International