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Structure and magnetic properties of double perovskites SrCaLnRuO6 (Ln = La, Pr, Nd)

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Title: Structure and magnetic properties of double perovskites SrCaLnRuO6 (Ln = La, Pr, Nd)
Authors: Sasaki, Akira Browse this author
Doi, Yoshihiro Browse this author →KAKEN DB
Hinatsu, Yukio Browse this author →KAKEN DB
Keywords: Magnetically ordered materials
X-ray diffraction
Magnetic measurements
Heat capacity
Issue Date: 27-May-2009
Publisher: Elsevier B.V.
Journal Title: Journal of Alloys and Compounds
Volume: 477
Issue: 1-2
Start Page: 900
End Page: 904
Publisher DOI: 10.1016/j.jallcom.2008.11.041
Abstract: Double perovskite compounds SrCaLnRuO6 (Ln = La, Pr, Nd) were prepared as a single phase. X-ray diffraction measurements show that Ca2+ and Ln3+ ions are partially disordered at the A site and half of the B site of the perovskite ABO3, and that Ca2+/Ln3+ and Ru5+ ions are regularly ordered at the B site. These compounds should be represented by SrCa_(1-x)Ln_x[Ln_(1-x)Ca_x]RuO6 and x = 0.83-0.93 for Ln = La, Pr, and Nd. Magnetic and specific heat measurements show that any of these compounds orders antiferromagnetically at 10-12 K, which is due to the magnetic interactions between Ru5+ ions. The analysis of the magnetic entropy change indicates that the ground states of Ru5+ and Ln3+ ions are both doublet.
Type: article (author version)
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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