dc.contributor.author | Geiger, Philipp T. | |
dc.contributor.author | Clemens, Oliver | |
dc.contributor.author | Khansur, Neamul H. | |
dc.contributor.author | Hinterstein, Manuel | |
dc.contributor.author | Sahini, Mtabazi Geofrey | |
dc.contributor.author | Grande, Tor | |
dc.contributor.author | Tung, Patrick | |
dc.contributor.author | Daniels, John E. | |
dc.contributor.author | Webber, Kyle G. | |
dc.date.accessioned | 2017-12-14T09:00:41Z | |
dc.date.available | 2017-12-14T09:00:41Z | |
dc.date.created | 2017-07-29T13:06:51Z | |
dc.date.issued | 2017 | |
dc.identifier.citation | Solid State Ionics. 2017, 300 106-113. | nb_NO |
dc.identifier.issn | 0167-2738 | |
dc.identifier.uri | http://hdl.handle.net/11250/2471523 | |
dc.description.abstract | Perovskite type Ba0.5Sr0.5Co0.8Fe0.2O3 − δ ceramics display nonlinear stress-strain behaviour upon uniaxial compression at room temperature. Step functional loading experiments show that the nonlinear strain response of the material is time dependent, partially reversible and depends on the oxygen vacancy concentration. In situ compressive stress-dependent synchrotron X-ray diffraction reveals that the nonlinearity is not related to ferroelasticity or a stress-induced phase transformation. The oxygen vacancy concentration and average spin state were determined from Rietveld analysis of the magnetic scattering found in the neutron powder diffraction data, indicating their role during mechanical loading. An oxygen vacancy migration model and a spin-state transition are proposed as possible mechanisms of nonlinear mechanical response. | nb_NO |
dc.language.iso | eng | nb_NO |
dc.publisher | Elsevier | nb_NO |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/deed.no | * |
dc.title | Nonlinear mechanical behaviour of Ba0.5Sr0.5Co0.8Fe0.2O3 − δ and in situ stress dependent synchrotron X-ray diffraction study | nb_NO |
dc.type | Journal article | nb_NO |
dc.type | Peer reviewed | nb_NO |
dc.description.version | acceptedVersion | nb_NO |
dc.source.pagenumber | 106-113 | nb_NO |
dc.source.volume | 300 | nb_NO |
dc.source.journal | Solid State Ionics | nb_NO |
dc.identifier.doi | 10.1016/j.ssi.2016.11.027 | |
dc.identifier.cristin | 1483330 | |
dc.description.localcode | © 2016. This is the authors’ accepted and refereed manuscript to the article. Locked until 21.12.2018 due to copyright restrictions. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ | nb_NO |
cristin.unitcode | 194,66,35,0 | |
cristin.unitname | Institutt for materialteknologi | |
cristin.ispublished | true | |
cristin.fulltext | postprint | |
cristin.qualitycode | 1 | |