dc.contributor.author | Tjønneland Wefring, Espen | |
dc.contributor.author | Schader, Florian H | |
dc.contributor.author | Webber, Kyle G | |
dc.contributor.author | Einarsrud, Mari-Ann | |
dc.contributor.author | Grande, Tor | |
dc.date.accessioned | 2016-04-29T09:15:45Z | |
dc.date.accessioned | 2016-05-02T13:08:29Z | |
dc.date.available | 2016-04-29T09:15:45Z | |
dc.date.available | 2016-05-02T13:08:29Z | |
dc.date.issued | 2016 | |
dc.identifier.citation | Journal of the European Ceramic Society 2016, 36(3):497-506 | nb_NO |
dc.identifier.issn | 0955-2219 | |
dc.identifier.uri | http://hdl.handle.net/11250/2388242 | |
dc.description.abstract | The high crystallographic strain and polarization of BiFeO3 are attractive, but utilization of bulk
BiFeO3 has been hindered by large leakage current and high coercive field. Here, we report on the
electrical conductivity and ferroelasticity of BiFeO3 substituted with 10 and 20 mol% Bi0.5K0.5TiO3. The
electrical conductivity is reduced by several orders of magnitude with donor substitution of Fe with
Ti, which also suppressed the strong dependence of the conductivity on partial pressure of oxygen.
Hard ferroelastic properties of the as‐sintered materials were demonstrated by stress‐strain
measurements. The coercive stress was strongly reduced by quenching from above the ferroelectric
to paraelectric phase transition, and the remanent strain increased and coercive stress decreased
with increasing temperature up to 400 °C. Ferroelastic hardening was also observed with increasing
Ti‐donor substitution. The effect of donor substitution is discussed with respect to point defect
chemistry and possible hardening mechanisms related to point defects. | nb_NO |
dc.language.iso | eng | nb_NO |
dc.publisher | Elsevier | nb_NO |
dc.title | Electrical conductivity and ferroelastic properties of Ti-substituted solid solutions (1-x) BiFeO3 – x Bi0.5K0.5TiO3 | nb_NO |
dc.type | Journal article | nb_NO |
dc.type | Peer reviewed | nb_NO |
dc.date.updated | 2016-04-29T09:15:45Z | |
dc.source.volume | 36 | nb_NO |
dc.source.journal | Journal of the European Ceramic Society | nb_NO |
dc.source.issue | 3 | nb_NO |
dc.identifier.doi | 10.1016/j.jeurceramsoc.2015.09.044 | |
dc.identifier.cristin | 1353145 | |
dc.description.localcode | © 2015 Elsevier Ltd. All rights reserved.This is the authors' accepted and refereed manuscript to the article. Locked until 2018-02-01 due to the copyright restrictions. | nb_NO |