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Magnetic properties of EuLn2O4 (Ln = rare earths)
| Title: | Magnetic properties of EuLn2O4 (Ln = rare earths) |
| Authors: | Hirose, Keiichi Browse this author | | Doi, Yoshihiro Browse this author →KAKEN DB | | Hinatsu, Yukio Browse this author →KAKEN DB |
| Keywords: | Magnetic properties | | Rare earths | | Oxides | | Antiferromagnetic interactions | | Magnetic susceptibility | | Mössbauer spectroscopy |
| Issue Date: | Jul-2009 |
| Publisher: | Elsevier Inc. |
| Journal Title: | Journal of Solid State Chemistry |
| Volume: | 182 |
| Issue: | 7 |
| Start Page: | 1624 |
| End Page: | 1630 |
| Publisher DOI: | 10.1016/j.jssc.2009.04.001 |
| Abstract: | Ternary rare earth oxides EuLn2O4 (Ln = Gd, Dy-Lu) were prepared. They crystallized in an orthorhombic CaFe2O4-type structure with space group Pnma. 151Eu Mössbauer spectroscopic measurements show that the Eu ions are in the divalent state. All these compounds show an antiferromagnetic transition at 4.2-6.3K. From the positive Weiss constant and the saturation of magnetization for EuLu2O4, it is considered that ferromagnetic chains of Eu2+ are aligned along the b-axis of the orthorhombic unit cell, with neighboring Eu2+ chains antiparallel. When Ln = Gd-Tm, ferromagnetically aligned Eu2+ ions interact with the Ln3+ ions, which would overcome the magnetic frustration of triangularly aligned Ln3+ ions and the EuLn2O4 compounds show a simple antiferromagnetic behavior. |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/38901 |
| 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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