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Magnetic properties of EuLn2O4 (Ln = rare earths)

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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)

Submitter: 日夏 幸雄

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