Electrical resistivity ρ (T) of the antiferromagnet EuPt2 Si2(TN = 16 K) between 2 and 300 K under hydrostatic pressure up to 2.6 GPa is presented. With applying pressure, TN monotonically shifts to the lower temperature range. Simultaneously, a characteristic upturn in ρ (T), which lies between 150 K and TN at ambient pressure, moves to higher temperatures accompanying a broad peak on the lower temperature end. In addition, an extra logarithmic upturn around 20 K between 1.9 and 2.4 GPa was newly noticed. These results are brought by the competitive state between magnetic order, valence transformation and probably Kondo effect in this compound.
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics