dc.contributor.author | Gaukås, Nikolai Helth | |
dc.contributor.author | Glaum, Julia | |
dc.contributor.author | Einarsrud, Mari-Ann | |
dc.contributor.author | Grande, Tor | |
dc.date.accessioned | 2020-03-16T12:44:30Z | |
dc.date.available | 2020-03-16T12:44:30Z | |
dc.date.created | 2020-03-08T11:52:08Z | |
dc.date.issued | 2020 | |
dc.identifier.issn | 2050-7526 | |
dc.identifier.uri | http://hdl.handle.net/11250/2646995 | |
dc.description.abstract | Chemical solution deposition (CSD) of K0.5Na0.5NbO3 (KNN) thin films on silicon-based substrates is an interesting technology for fabrication of lead-free ferroelectric thin films. Here, we report on improved ferroelectric and dielectric properties of KNN thin films prepared by CSD through Ca2+-doping and Ca2+-Ti4+ (CaTiO3) co-doping. Undoped KNN, 0.5 mol% Ca2+-doped and 0.5 mol% CaTiO3-doped KNN films were deposited on platinized silicon substrates by aqueous CSD. X-ray diffraction of the films as well as powders, prepared from the precursor solutions, confirmed that the three KNN materials were single phase solid solutions. A smaller grain size was observed for the doped relative to undoped KNN films. Investigation of the ferroelectric properties of the thin films demonstrated that Ca2+- and CaTiO3-doping promotes ferroelectric switching, with a low leakage current and remnant polarization of 6.37±0.47 and 7.40±0.09 μC cm-2 of the Ca2+- and CaTiO3-doped films, respectively. The dielectric constants of the films were among the highest measured for KNN films from CSD and span from 1800 to 3200 at 1 kHz. | nb_NO |
dc.language.iso | eng | nb_NO |
dc.publisher | Royal Society of Chemistry | nb_NO |
dc.title | Ferroelectric and dielectric properties of Ca2+-doped and Ca2+-Ti4+ co-doped K0.5Na0.5NbO3 thin films | nb_NO |
dc.type | Journal article | nb_NO |
dc.type | Peer reviewed | nb_NO |
dc.description.version | acceptedVersion | nb_NO |
dc.source.journal | Journal of Materials Chemistry C | nb_NO |
dc.identifier.doi | 10.1039/D0TC00276C | |
dc.identifier.cristin | 1800346 | |
dc.description.localcode | © 2020. This is the authors' accepted and refereed manuscript to the article. Locked until 9.3.2021 due to copyright restrictions. The final authenticated version is available online at: https://doi.org/10.1039/D0TC00276C | nb_NO |
cristin.unitcode | 194,66,35,0 | |
cristin.unitname | Institutt for materialteknologi | |
cristin.ispublished | true | |
cristin.fulltext | postprint | |
cristin.qualitycode | 1 | |