LETTER TO THE EDITOR: Magnetic properties of the icosahedral Cd-Mg-rare-earth quasicrystals
Abstract
We report dc and ac magnetization of the newly discovered Cd-Mg-RE quasicrystals (RE = Gd, Tb, Dy, Ho, Er, Tm and Yb). For all the RE atoms except Yb, the temperature dependence of the dc magnetization obeys the Curie-Weiss law at higher temperatures, T>50 K. Estimated effective moments indicate that these atoms are in the trivalent states. In contrast, the Cd-Mg-Yb quasicrystal shows very small magnetization, suggesting that Yb is in the non-magnetic divalent state. At lower temperatures, spin-glass-like freezing was observed for the RE atoms except Tm and Yb. In particular, the freezing proceeds in two successive steps for RE = Gd, Tb, Dy and Ho, being quite different from canonical spin-glasses.
- Publication:
-
Journal of Physics Condensed Matter
- Pub Date:
- January 2001
- DOI:
- 10.1088/0953-8984/13/4/106
- Bibcode:
- 2001JPCM...13L.105S