Ultrahigh thermal stability and piezoelectricity of lead-free piezoceramics through mimicking PZT’s MPB structure

Ultrahigh thermal stability and piezoelectricity of lead-free piezoceramics through mimicking PZT’s MPB structure | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Article Ultrahigh thermal stability and piezoelectricity of lead-free piezoceramics through mimicking PZT’s MPB structure Jiwei Zhai, lihui xu, Jinfeng Lin, yuxuan yang, zhihao zhao, Xiaoming Shi, and 10 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-4133025/v1 This work is licensed under a CC BY 4.0 License Status: Published Journal Publication published 18 Oct, 2024 Read the published version in Nature Communications → Version 1 posted You are reading this latest preprint version Abstract High-performance (K, Na)NbO 3 (KNN) based piezoceramics is attractive as an alternative to Pb-based piezoceramics because of the growing concerns for environmental sustainability. Unfortunately, the serious contradiction between the high piezoelectricity generated by the construction of polymorphic phase boundary (PPB) and their uniquely poor temperature stability is a huge obstacle to the applications for KNN-based ceramics. In this study, the 0.94(Na 0.56 K 0.44 )NbO 3 -0.03Bi 0.5 Na 0.5 ZrO 3 -0.03(Bi 0.5 K 0.5 )HfO 3 textured ceramics possess a novel phase boundary similar to MPB in PZT via the synergistic optimization of diffusion phase boundary and crystal orientation. As a result, the prominent comprehensive piezoelectricity with a giant d 33 ∼ 550 ± 30 pC/N and ultrahigh temperature stability ( d 33 change rate less than 1.2% within 25 to 150 ℃, and less than 10% within 25-250 °C) were obtained, representing a significant breakthrough in lead-free piezoelectric ceramics. This study demonstrates a strategy of constructing a new-type phase boundary with MPB feature to solve the issue of temperature instability in high-performance KNN-based ceramics, which greatly accelerates the development and application of lead-free piezoelectric ceramics. Physical sciences/Materials science/Structural materials/Ceramics Physical sciences/Materials science/Materials for devices/Electronic devices KNN-based ultrahigh temperature stability new phase boundary with MPB feature lead-free textured ceramics high piezoelectricity Full Text Additional Declarations There is NO Competing Interest. Supplementary Files SupportingInformation.docx Ultrahigh thermal stability and piezoelectricity of lead-free piezoceramics through mimicking PZT’s MPB structure Cite Share Download PDF Status: Published Journal Publication published 18 Oct, 2024 Read the published version in Nature Communications → Version 1 posted You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-4133025","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":287204464,"identity":"69e1fd22-ec50-4f1d-9f12-ad07b5abb0cd","order_by":0,"name":"Jiwei 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Unfortunately, the serious contradiction between the high piezoelectricity generated by the construction of polymorphic phase boundary (PPB) and their uniquely poor temperature stability is a huge obstacle to the applications for KNN-based ceramics. In this study, the 0.94(Na\u003csub\u003e0.56\u003c/sub\u003eK\u003csub\u003e0.44\u003c/sub\u003e)NbO\u003csub\u003e3\u003c/sub\u003e-0.03Bi\u003csub\u003e0.5\u003c/sub\u003eNa\u003csub\u003e0.5\u003c/sub\u003eZrO\u003csub\u003e3\u003c/sub\u003e-0.03(Bi\u003csub\u003e0.5\u003c/sub\u003eK\u003csub\u003e0.5\u003c/sub\u003e)HfO\u003csub\u003e3\u003c/sub\u003e textured ceramics possess a novel phase boundary similar to MPB in PZT via the synergistic optimization of diffusion phase boundary and crystal orientation. As a result, the prominent comprehensive piezoelectricity with a giant \u003cem\u003ed\u003c/em\u003e\u003csub\u003e33\u003c/sub\u003e ∼ 550 ± 30 pC/N and ultrahigh temperature stability (\u003cem\u003ed\u003c/em\u003e\u003csub\u003e33 \u003c/sub\u003echange rate less than 1.2% within 25 to 150 ℃, and less than 10% within 25-250 °C) were obtained, representing a significant breakthrough in lead-free piezoelectric ceramics. 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