Magnetic properties and neutron diffraction study of double perovskites Ca2LnRuO6 (Ln = Y, La-Lu)

Chiho Sakai, Yoshihiro Doi, Yukio Hinatsu, Kenji Ohoyama

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14 Citations (Scopus)

Abstract

Magnetic properties of double perovskites Ca2LnRuO6 (Ln ≤ Y, La-Lu) were investigated. From the magnetic susceptibility and specific heat measurements, it is found that all the title compounds show an antiferromagnetic transition (TN ≤ 10-34 K), and that the antiferromagnetic ordering of Ru5+ ions with a doublet ground state occurs below these temperatures. In these compounds, the larger Ln ions tend to occupy the A site of the perovskite ABO3, while the smaller Ln ions tend to occupy the B site. The Nd ions in Ca2NdRuO6 are situated at the A site and show an antiferromagnetic transition at 1.6 K, which is much lower than TN ≤ 11.5 K. On the other hand, the Yb ions in Ca2YbRuO6 are situated at the B site, and a long-range antiferromagnetic ordering due to both Yb3+ and Ru5+ ions occurs at 34 K. The magnetic structure of Ca2YbRuO6 was determined by powder neutron diffraction measurements; it shows a non-collinear arrangement between Yb3+ (∼1.3 νB) and Ru 5+ (∼1.7 νB) moments.

Original languageEnglish
Pages (from-to)7383-7394
Number of pages12
JournalJournal of Physics Condensed Matter
Volume17
Issue number46
DOIs
Publication statusPublished - 2005 Nov 23

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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