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DC Field | Value | Language |
---|---|---|
dc.citation.endPage | S24 | - |
dc.citation.startPage | S21 | - |
dc.citation.title | CERAMICS INTERNATIONAL | - |
dc.citation.volume | 38 | - |
dc.contributor.author | Kim, Tae Hyun | - |
dc.contributor.author | Ko, Jae-Hyeon | - |
dc.contributor.author | Kim, Sung Baek | - |
dc.contributor.author | Park, Kibog | - |
dc.contributor.author | Kojima, Seiji | - |
dc.date.accessioned | 2023-12-22T05:37:29Z | - |
dc.date.available | 2023-12-22T05:37:29Z | - |
dc.date.created | 2013-06-18 | - |
dc.date.issued | 2012-01 | - |
dc.description.abstract | The ferroelectric phase transition of Ca-substituted barium titanate single crystals, Ba1-xCaxTiO3 (BCTO-x), with x = 0.12 and 0.20 grown by optical floating zone method were studied by dielectric and Brillouin scattering methods. The X-ray diffraction investigation confirmed the structural phase transition from cubic to tetragonal phase in BCTO-x. The dielectric constant exhibited a sharp peak at the ferroelectric phase transition temperature (T-c) and a deviation from the Curie Weiss law on approaching T-c from the high-temperature side. Brillouin scattering results showed that, similar to the acoustic properties of BCTO-0.20, dynamic precursor polar clusters are formed in the paraelectric phase of BCTO-0.12 single crystals which interact with acoustic waves via electrostrictive coupling resulting in large acoustic anomalies near T-c. However, the temperature dependence of the dielectric constant indicated that diffuseness of the ferroelectric phase transition of BCTO-x became enhanced with Ca content, which was attributed to compositional disorder induced by random substitution of Ba cations by Ca ions. | - |
dc.identifier.bibliographicCitation | CERAMICS INTERNATIONAL, v.38, pp.S21 - S24 | - |
dc.identifier.doi | 10.1016/j.ceramint.2011.04.040 | - |
dc.identifier.issn | 0272-8842 | - |
dc.identifier.scopusid | 2-s2.0-84655162196 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/10063 | - |
dc.identifier.url | http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84655162196 | - |
dc.identifier.wosid | 000299589800006 | - |
dc.language | 영어 | - |
dc.publisher | ELSEVIER SCI LTD | - |
dc.title | Ferroelectric phase transitions studied by dielectric and light scattering spectroscopies on Ba1-xCaxTiO3 single crystals (x=0.12, 0.20) | - |
dc.type | Article | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Ceramics | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | Ferroelectric properties | - |
dc.subject.keywordAuthor | BaTiO3 and titanates | - |
dc.subject.keywordAuthor | Spectroscopy | - |
dc.subject.keywordAuthor | Dielectric properties | - |
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