Evidence of mixed valence in (Eu1-xYbx)Ga4 single crystals
Abstract
In this paper we report on the magnetization and specific heat results on single crystals of the series (Eu,Yb)Ga 4 aiming to study a possible valence change on both RE ions. The results show a decrease on TN and unit cell volume due to the chemical pressure. The enhancement of the effective moment suggests the presence of Yb while the constancy of the saturation magnetization points to a fixed 2+valence for Eu.
- Publication:
-
Physica B Condensed Matter
- Pub Date:
- April 2008
- DOI:
- 10.1016/j.physb.2007.10.285
- Bibcode:
- 2008PhyB..403..946L