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DC Field | Value | Language |
---|---|---|
dc.citation.endPage | 4086 | - |
dc.citation.number | 33 | - |
dc.citation.startPage | 4079 | - |
dc.citation.title | ADVANCED FUNCTIONAL MATERIALS | - |
dc.citation.volume | 23 | - |
dc.contributor.author | Yao, Fang-Zhou | - |
dc.contributor.author | Jo, Wook | - |
dc.contributor.author | Gobeljic, Danka | - |
dc.contributor.author | Shvartsman, Vladimir V. | - |
dc.contributor.author | Lupascu, Doru C. | - |
dc.contributor.author | Li, Jing-Feng | - |
dc.contributor.author | Roedel, Juergen | - |
dc.date.accessioned | 2023-12-22T03:37:44Z | - |
dc.date.available | 2023-12-22T03:37:44Z | - |
dc.date.created | 2014-10-21 | - |
dc.date.issued | 2013-09 | - |
dc.description.abstract | The development of lead-free piezoceramics has attracted great interest because of growing environmental concerns. A polymorphic phase transition (PPT) has been utilized in the past to tailor piezoelectric properties in lead-free (K,Na)NbO3 (KNN)-based materials accepting the drawback of large temperature sensitivity. Here a material concept is reported, which yields an average piezoelectric coefficientd(33) of about 300 pC/N and a high level of unipolar strain up to 0.16% at room temperature. Most intriguingly, field-induced strain varies less than 10% from room temperature to 175 degrees C. The temperature insensitivity of field-induced strain is rationalized using an electrostrictive coupling to polarization amplitude while the temperature-dependent piezoelectric coefficient is discussed using localized piezoresponse probed by piezoforce microscopy. This discovery opens a new development window for temperature-insensitive piezoelectric actuators despite the presence of a polymorphic phase transition around room temperature. | - |
dc.identifier.bibliographicCitation | ADVANCED FUNCTIONAL MATERIALS, v.23, no.33, pp.4079 - 4086 | - |
dc.identifier.doi | 10.1002/adfm.201203754 | - |
dc.identifier.issn | 1616-301X | - |
dc.identifier.scopusid | 2-s2.0-84883590808 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/7521 | - |
dc.identifier.url | http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84883590808 | - |
dc.identifier.wosid | 000327492300004 | - |
dc.language | 영어 | - |
dc.publisher | WILEY-V C H VERLAG GMBH | - |
dc.title | Temperature-insensitive (K,Na)NbO3-based lead-free piezoactuator ceramics | - |
dc.type | Article | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
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