BROWSE

Related Scientist

cces's photo.

cces
강상관계물질연구단
more info

ITEM VIEW & DOWNLOAD

Observation of ferroelectricity induced by defect dipoles in the strain-free epitaxial CaTiO3 thin film

DC Field Value Language
dc.contributor.authorSang Mo Yang-
dc.contributor.authorSoon Jae Moon-
dc.contributor.authorTae Heon Kim-
dc.contributor.authorYong Su Kim-
dc.date.available2015-04-20T05:56:51Z-
dc.date.created2014-08-11-
dc.date.issued2014-05-
dc.identifier.issn1567-1739-
dc.identifier.urihttps://pr.ibs.re.kr/handle/8788114/1034-
dc.description.abstractCaTiO3 is a well-known incipient ferroelectric material that does not undergo a ferroelectric phase transition in spite of the intriguing dielectric constant behavior. Especially, unlike a prototypical incipient ferroelectric SrTiO3, the paraelectric state of CaTiO3 cannot be easily destroyed by small perturbations, including cation doping and epitaxial strain. We present that a nearly strain-free epitaxial CaTiO3 film grown at a low oxygen partial pressure exhibits polarizationevoltage hysteresis loops and the distinct difference of piezoresponse force microscopy phase signals, implying that a ferroelectric phase is induced. Such results are shown even at room temperature. We suggest that the observed ferroelectric behavior in CaTiO3 film comes from the defect dipoles composed of vacancies inside the film. Using electron-probe microanalysis and optical absorption spectra measurements, we found that CaTiO3 film has considerable Ca and O vacancies, forming the localized defect state in electronic structure. This work highlights the importance of vacancies and their clusters, such as defect dipoles, in understanding the electronic properties of perovskite oxide thin films, including ferroelectricity. 2014 Elsevier B.V. All rights reserved.-
dc.description.uri1-
dc.language영어-
dc.publisherELSEVIER SCIENCE BV-
dc.subjectCaTiO3, Incipient ferroelectrics, Ferroelectricity, Defect dipoles, Vacancy-
dc.titleObservation of ferroelectricity induced by defect dipoles in the strain-free epitaxial CaTiO3 thin film-
dc.typeArticle-
dc.type.rimsART-
dc.identifier.wosid000335909000022-
dc.identifier.scopusid2-s2.0-84898071804-
dc.identifier.rimsid217ko
dc.date.tcdate2018-10-01-
dc.contributor.affiliatedAuthorSang Mo Yang-
dc.contributor.affiliatedAuthorTae Heon Kim-
dc.contributor.affiliatedAuthorYong Su Kim-
dc.identifier.doi10.1016/j.cap.2014.03.009-
dc.identifier.bibliographicCitationCURRENT APPLIED PHYSICS, v.14, no.5, pp.757 - 760-
dc.citation.titleCURRENT APPLIED PHYSICS-
dc.citation.volume14-
dc.citation.number5-
dc.citation.startPage757-
dc.citation.endPage760-
dc.date.scptcdate2018-10-01-
dc.description.wostc12-
dc.description.scptc10-
dc.description.journalClass1-
dc.description.journalRegisteredClassscie-
dc.description.journalRegisteredClassscopus-
dc.description.journalRegisteredClasskci-
Appears in Collections:
Center for Correlated Electron Systems(강상관계 물질 연구단) > 1. Journal Papers (저널논문)
Files in This Item:
CAP 14 (2014) 757-760_Observation of ferroelectricity induced by defect dipoles.pdfDownload

qrcode

  • facebook

    twitter

  • Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
해당 아이템을 이메일로 공유하기 원하시면 인증을 거치시기 바랍니다.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse