Abstract
The compound YbCuGa has been synthesized and is found to crystallize in the orthorhombic CeCu2-type structure. Its magnetic susceptibility has been measured between 4.2 and 300 K and shows a broad maximum at about 190 K. This maximum is a characteristic feature of the mixed-valent Ce- and Yb-based compounds. The temperature-dependent resistivity exhibits an S-type behavior. The thermoelectric power is negative between 20 and 300 K and also shows a broad minimum at about 190 K. L3 x-ray-absorption near-edge-structure (XANES) measurements show the two-peak pattern that corresponds to two different valence states of Yb. Thus, magnetic susceptibility, electrical resistivity, thermoelectric power, and L XANES measurements all point to the mixed-valence nature of Yb ions in YbCuGa.
| Original language | English |
|---|---|
| Pages (from-to) | 2700-2703 |
| Number of pages | 4 |
| Journal | Physical Review B |
| Volume | 42 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 1990 |
| Externally published | Yes |
ASJC Scopus subject areas
- Condensed Matter Physics