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Preparation and thermal stability of oxynitride perovskite solid solution Sr1-xLaxTa1-xTixO2N
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| Title: | Preparation and thermal stability of oxynitride perovskite solid solution Sr1-xLaxTa1-xTixO2N |
| Authors: | Masubuchi, Yuji Browse this author →KAKEN DB | | Ohtaki, Sota Browse this author | | Fujii, Kotaro Browse this author | | Yashima, Masatomo Browse this author | | Higuchi, Mikio Browse this author →KAKEN DB | | Kikkawa, Shinichi Browse this author |
| Keywords: | Oxynitride perovskite | | Ammonia nitridation | | Thermal stability | | Neutron diffraction |
| Issue Date: | Dec-2020 |
| Publisher: | Elsevier |
| Journal Title: | Journal of the European ceramic society |
| Volume: | 40 |
| Issue: | 16 |
| Start Page: | 6288 |
| End Page: | 6292 |
| Publisher DOI: | 10.1016/j.jeurceramsoc.2019.10.004 |
| Abstract: | The thermal stability of oxynitride perovskites is very important for the fabrication of their dense ceramics. In this study, a solid solution of the oxynitride perovskite Sr1-xLaxTa1-xTixO2N was prepared via the ammonia nitridation of oxide precursors. The oxynitrides products obtained at x <= 0.2 and x >= 0.7 had tetragonal and triclinic perovskite-type structures, respectively. A neutron diffraction study on the oxynitride product obtained at x = 0.2 indicated that this tetragonal perovskite had a cis-type anion distribution similarly to SrTaO2N. The tetragonal perovskite released a part of nitrogen at approximately 1000 degrees C in a nitrogen atmosphere while maintaining the perovskite structure at least to 1450 degrees C. The oxynitride perovskites at x >= 0.5 gradually decomposed to a mixture of LaTiO2N, LaTiO3, La(OH)(3), La2O3, TiN and TaO above 1100 degrees C. |
| Rights: | ©2019. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ | | http://creativecommons.org/licenses/by-nc-nd/4.0/ |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/84435 |
| Appears in Collections: | 工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 鱒渕 友治
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