Low-Temperature Magnetic Properties of Pyrochlore Stannates

15 June 2002

journal article
research article
Published by Physical Society of Japan in Journal of the Physics Society Japan

Vol. 71 (6) , 1576-1582
https://doi.org/10.1143/jpsj.71.1576

Abstract

We report the magnetic properties of pyrochlore rare earth oxides R ₂Sn ₂O ₇ ( R =Pr, Nd, Gd, Tb, Dy, Ho, Er, Tm and Yb). The magnetic susceptibility has been measured at temperatures down to 0.1 K. Among them, some compounds show the magnetic anomaly below 1 K. Nd ₂Sn ₂O ₇ and Gd ₂Sn ₂O ₇ show an antiferromagnetic ordering at 0.9 K and 1.0 K, respectively. Tb ₂Sn ₂O ₇ shows a ferromagnetic ordering at 0.87 K. Although both Er ³⁺ and Yb ³⁺ are a Kramers ion, no magnetic anomaly is observed at least down to 0.15 K. We found that Dy ₂Sn ₂O ₇ and Ho ₂Sn ₂O ₇ show `spin ice' behavior. In addition, it is suggested that Pr ₂Sn ₂O ₇ is a new spin ice compound.

Keywords

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