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Park, Kibog
Emergent Materials & Devices Lab
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  • Semiconductor, Metal Oxide Thin Film, Graphene, Non-Volatile Memory, Quantum Transport, Quantum Computing Device

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Precursor polar clusters in the paraelectric phase of ferroelectric Ba0.80Ca0.20TiO3 single crystals studied by Brillouin light scattering

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dc.contributor.author Kim, Tae Hyun ko
dc.contributor.author Kojima, Seiji ko
dc.contributor.author Park, Kibog ko
dc.contributor.author Kim, Sung Baek ko
dc.contributor.author Ko, Jae-Hyeon ko
dc.date.available 2015-01-12T03:11:25Z -
dc.date.created 2013-06-24 ko
dc.date.issued 2010-06 ko
dc.identifier.citation JOURNAL OF PHYSICS-CONDENSED MATTER, v.22, no.22 ko
dc.identifier.issn 0953-8984 ko
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/10067 -
dc.description.abstract A strong relaxation mode was observed in the gigahertz frequency window in the paraelectric phase of Ba0.80Ca0.20TiO3 single crystals by using Brillouin light scattering. The appearance and growth of this relaxation mode were accompanied by substantial softening of the longitudinal acoustic mode as well as a remarkable increase in the hypersonic damping. Similar to BaTiO3, the temperature dependence of the relaxation time of Ba0.80Ca0.20TiO3 displayed a slowing-down behavior near the Curie temperature, indicating the order-disorder nature of the paraelectric-ferroelectric phase transition in this substance. The dynamics of precursor polar clusters observed in this work was discussed in relation with recent theoretical studies and found to be consistent with their predictions. ko
dc.description.statementofresponsibility close -
dc.language 영어 ko
dc.publisher IOP PUBLISHING LTD ko
dc.title Precursor polar clusters in the paraelectric phase of ferroelectric Ba0.80Ca0.20TiO3 single crystals studied by Brillouin light scattering ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-77957580061 ko
dc.identifier.wosid 000286003500012 ko
dc.type.rims ART ko
dc.description.wostc 11 *
dc.date.tcdate 2015-12-28 *
dc.identifier.doi 10.1088/0953-8984/22/22/225904 ko
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