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Synthesis and magnetic properties of 12L-perovskites Ba4LnIr3O12 (Ln = lanthanides)
| Title: | Synthesis and magnetic properties of 12L-perovskites Ba4LnIr3O12 (Ln = lanthanides) |
| Authors: | Shimoda, Yuki Browse this author | | Doi, Yoshihiro Browse this author →KAKEN DB | | Wakeshima, Makoto Browse this author | | Hinatsu, Yukio Browse this author →KAKEN DB |
| Keywords: | Magnetic properties | | Lanthanides | | Perovskite | | Oxides | | Magnetic susceptibility | | Specific heat |
| Issue Date: | Oct-2009 |
| Publisher: | Elsevier Inc. |
| Journal Title: | Journal of Solid State Chemistry |
| Volume: | 182 |
| Issue: | 10 |
| Start Page: | 2873 |
| End Page: | 2879 |
| Publisher DOI: | 10.1016/j.jssc.2009.07.056 |
| Abstract: | New quadruple perovskite oxides Ba4LnIr3O12 (Ln = lanthanides) were prepared and their magnetic properties were investigated. They crystallize in the monoclinic 12L-perovskite-type structure with space group C2/m. The Ir3O12 trimers and LnO6 octahedra are alternately linked by corner-sharing and form the perovskite-type structure with 12 layers. The Ln and Ir ions are both in the tetravalent state for Ln = Ce, Pr, and Tb compounds (Ba4Ln^[4+]Ir^[4+]3O12), and for other compounds (Ln = La, Nd, Sm-Gd, Dy-Lu), Ln ions are in the trivalent state and the mean oxidation state of Ir ions is +4.33(Ba4Ln^[3+]Ir^[4.33+]3O12). An antiferromagnetic transition has been observed for Ln = Ce, Pr, and Tb compounds at 10.5, 35, and 16 K, respectively, while the other compounds are paramagnetic down to 1.8 K. |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/39663 |
| Appears in Collections: | 理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 日夏 幸雄
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