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Pressure-dependent Raman modes near the cubic-tetragonal transition in strontium titanate

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dc.contributor.author Kiracı, Ali
dc.contributor.author Yurtseven, Hamit
dc.date.accessioned 2018-10-04T11:38:12Z
dc.date.available 2018-10-04T11:38:12Z
dc.date.issued 2018-03
dc.identifier.citation Kiracı, A., Yurtseven, H. (2018). Pressure-dependent Raman modes near the cubic-tetragonal transition in strontium titanate. Journal Of The american Ceramic Society, 101(3), 1344-1355. http://dx.doi.org/ 10.1111/jace.15279 tr_TR
dc.identifier.issn 0002-7820
dc.identifier.uri http://hdl.handle.net/20.500.12416/1829
dc.description.abstract The pressure dependence of the Raman frequency shifts of various Raman modes is calculated at room temperature using the volume data from the literature for the cubic-tetragonal transition in SrTiO3. The isothermal mode Gruneisen parameters of those Raman modes are obtained, which decrease with increasing pressure for this molecular crystal. Calculated Raman frequencies are then used to predict the damping constant and the inverse relaxation time of those Raman modes as a function of pressure by means of the pseudospin-phonon (PS) coupled model and the energy fluctuation (EF) model to describe the cubic-tetragonal transition in SrTiO3. Also, the values of the activation energy are extracted for the Raman modes studied using both models (PS and EF). Our predicted damping constant and the inverse relaxation time for the Raman modes, can be compared with the experimental measurements close to the cubic-tetragonal transition in SrTiO3. tr_TR
dc.language.iso eng tr_TR
dc.publisher Wiley tr_TR
dc.relation.isversionof 10.1111/jace.15279 tr_TR
dc.rights info:eu-repo/semantics/closedAccess tr_TR
dc.subject Dielectric Relaxation tr_TR
dc.subject Phase Transformations tr_TR
dc.subject Raman Spectroscopy tr_TR
dc.subject Strontium Titanate tr_TR
dc.title Pressure-dependent Raman modes near the cubic-tetragonal transition in strontium titanate tr_TR
dc.type article tr_TR
dc.relation.journal Journal Of The american Ceramic Society tr_TR
dc.contributor.authorID 42475 tr_TR
dc.identifier.volume 101 tr_TR
dc.identifier.issue 3 tr_TR
dc.identifier.startpage 1344 tr_TR
dc.identifier.endpage 1355 tr_TR
dc.contributor.department Çankaya Üniversitesi, Ortak Dersler Bölümü, Temel Mühendislik ABD Fizik Bilim Dalı tr_TR


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