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Jo, Wook
Sustainable Functional Ceramics Lab
Research Interests
  • Lead-free piezoceramics, ultra - low temperature sintering, ferroelectrics, relaxor ferroelectrics, 2D materials, magnetoelectric materials, multiferroics

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Frequency and temperature dependence of actuating performance of Bi1/2Na1/2TiO3-BaTiO3 based relaxor/ferroelectric composites

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dc.contributor.author Groh, Claudia ko
dc.contributor.author Jo, Wook ko
dc.contributor.author Roedel, Juergen ko
dc.date.available 2014-11-27T00:08:13Z -
dc.date.created 2014-10-15 ko
dc.date.issued 2014-06 -
dc.identifier.citation JOURNAL OF APPLIED PHYSICS, v.115, no.23, pp.1 - 6 ko
dc.identifier.issn 0021-8979 ko
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/9261 -
dc.identifier.uri http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84903147561 ko
dc.description.abstract Recently, composites of relaxors (matrix) and either ferroelectric or nonergodic relaxor (seed) were proposed as a solution to resolving one of the main drawbacks of incipient piezoceramics, namely the requirement for high driving electric fields. In this study, we investigate the temperature and frequency dependence of the actuating performance of Bi1/2Na1/2TiO3-BaTiO3-based composites. Apart from the reduction of driving field, the composite architecture offers an extra degree of freedom for tailoring the temperature stability for different operational conditions for actuators. High strain values appear to be sensitive especially to driving frequency. This is originated by the time-dependent process of the coalescence of polar nanoregions. In effect, proximity of driving field and poling field leads to high strain sensitivity. Hence, the driving electric field needs to be adjusted in order to meet the desired frequency specifications for given applications. ko
dc.description.statementofresponsibility open -
dc.language ENG ko
dc.publisher AMER INST PHYSICS ko
dc.subject LEAD-FREE PIEZOCERAMICS ko
dc.subject FREE PIEZOELECTRIC MATERIALS ko
dc.subject POLARIZATION REVERSAL ko
dc.subject CERAMICS ko
dc.subject STRAIN ko
dc.subject FIELD ko
dc.subject PZT ko
dc.subject FERROELECTRICS ko
dc.subject PERSPECTIVE ko
dc.subject DYNAMICS ko
dc.title Frequency and temperature dependence of actuating performance of Bi1/2Na1/2TiO3-BaTiO3 based relaxor/ferroelectric composites ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-84903147561 ko
dc.identifier.wosid 000338106000062 ko
dc.type.rims ART ko
dc.description.wostc 0 *
dc.description.scopustc 0 *
dc.date.tcdate 2015-05-06 *
dc.date.scptcdate 2014-11-26 *
dc.identifier.doi 10.1063/1.4876680 ko
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