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Magnetic properties of orthorhombic fluorite-related oxides Ln3SbO7 (Ln = rare earths)

Hinatsu, Yukio; Ebisawa, Haruka; Doi, Yoshihiro

Journal of Solid State Chemistry, 2009, 182(7), 1694-1699

Permalink : https://hdl.handle.net/2115/38902

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アクセス権
open access
URI
https://hdl.handle.net/2115/38902
タイトル
Magnetic properties of orthorhombic fluorite-related oxides Ln3SbO7 (Ln = rare earths)
著者
Hinatsu, Yukio ; Ebisawa, Haruka ; Doi, Yoshihiro
e-Rad_Researcher
70271707
著者名
Hinatsu, Yukio
著者名
Ebisawa, Haruka
著者名
Doi, Yoshihiro
言語
英語
キーワード
Magnetic properties
Rare earths
Oxides
Magnetic susceptibility
Specific heat
Antiferromagnetic transition
発行日
2009-07
出版者
Elsevier Inc.
収録物名
Journal of Solid State Chemistry
巻(号)
182(7)
ページ
1694-1699
抄録
Ternary rare earth antimonates Ln3SbO7 (Ln = rare earths) were prepared and their structures were determined by x-ray diffraction measurements. They crystallize in an orthorhombic superstructure of cubic fluorite (space group Cmcm for Ln = La, Pr, Nd; C-222_[1] for Ln = Nd～Lu), in which Ln3+ ions occupy two different crystallographic sites (the 8-coordinated and 7-coordinated sites). Their magnetic properties were characterized by magnetic susceptibility and specific heat measurements from 1.8 to 400 K. The Ln3SbO7 (Ln = Nd, Gd-Ho) compounds show an antiferromagnetic transition at 2.2～3.2 K. Sm3SbO7 and Eu3SbO7 show van Vleck paramagnetism. Measurements of the specific heat down to 0.4 K for Gd3SbO7 and the analysis of the magnetic specific heat indicate that the antiferromagnetic ordering of the 8-coordinated Gd ions occur at 2.6 K, and the 7-coordinated Gd ions order at a furthermore low temperature.
資源タイプ
学術雑誌論文
出版タイプ
Accepted Manuscript
PISSN
0022-4596
関連情報 (isVersionOf)
出版社版DOI
https://doi.org/10.1016/j.jssc.2009.04.015