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dc.contributor.authorKim, Jong-Hyun-
dc.contributor.authorKim, Dae-Hyeon-
dc.contributor.authorSeo, In-Tae-
dc.contributor.authorHur, Joon-
dc.contributor.authorLee, Ji-Hyun-
dc.contributor.authorKim, Bo-Yun-
dc.contributor.authorNahm, Sahn-
dc.date.accessioned2024-01-20T06:01:52Z-
dc.date.available2024-01-20T06:01:52Z-
dc.date.created2022-01-25-
dc.date.issued2015-10-
dc.identifier.issn0924-4247-
dc.identifier.urihttps://pubs.kist.re.kr/handle/201004/124911-
dc.description.abstractCuO assisted the densification of KNbO3 (KN) ceramics sintered at 960 degrees C through the formation of a CuO-related liquid phase. Most of the Cu2+ ions entered the Nb5+ sites of the KN ceramics and acted as a hardener. In addition, the CuO-added KN (CKN) ceramics exhibited a double polarization versus electric field (P-E) loop and a sprout-shaped strain versus electric field (S-E) loop. The formation of these was attributed to the presence of defect dipoles formed by acceptor ions (Cu2+) and oxygen vacancies. In fact, owing to the high orthorhombic-to-tetragonal transition temperature of the CKN ceramics, the double P-E and sprout-shaped S-E loops developed without an aging process. Furthermore, the 1.0 mol% CuO-added KN ceramic exhibited a very high Q(m) value of 3005 with a large unipolar strain of 0.15% at 8.0 kV/mm. (C) 2015 Elsevier B.V. All rights reserved.-
dc.languageEnglish-
dc.publisherELSEVIER SCIENCE SA-
dc.titleEffect of CuO on the ferroelectric and piezoelectric properties of lead-free KNbO3 ceramics-
dc.typeArticle-
dc.identifier.doi10.1016/j.sna.2015.08.015-
dc.description.journalClass1-
dc.identifier.bibliographicCitationSENSORS AND ACTUATORS A-PHYSICAL, v.234, pp.9 - 16-
dc.citation.titleSENSORS AND ACTUATORS A-PHYSICAL-
dc.citation.volume234-
dc.citation.startPage9-
dc.citation.endPage16-
dc.description.isOpenAccessN-
dc.description.journalRegisteredClassscie-
dc.description.journalRegisteredClassscopus-
dc.identifier.wosid000363826400002-
dc.identifier.scopusid2-s2.0-84940643426-
dc.relation.journalWebOfScienceCategoryEngineering, Electrical & Electronic-
dc.relation.journalWebOfScienceCategoryInstruments & Instrumentation-
dc.relation.journalResearchAreaEngineering-
dc.relation.journalResearchAreaInstruments & Instrumentation-
dc.type.docTypeArticle-
dc.subject.keywordPlusCRYSTALS-
dc.subject.keywordAuthorLead-free piezoelectrics-
dc.subject.keywordAuthorDouble polarization versus electric field loop-
dc.subject.keywordAuthorSprout-shaped strain versus electric field loop-
dc.subject.keywordAuthorHardening effect-
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