Approach of the state from antiferromagnetic to heavy fermion in CeIn(Ag _{1 x}Cu _{x}) _{2} under pressure
Abstract
The electrical resistivity has been studied in the Heusler alloy system CeIn(Cu _{1 x}Ag _{x}) _{2} under pressure up to 20 kbar. Under pressure, the Néel temperature, T _{N}, decreases for x = 0.75 and 0.85 but increases for N = 0.50, T_{max} (resistivity maximum temperature) decreases for x = 0.50 and 0.75 while for x = 0.85 it increases above 10 kbar. These results are analyzed and discussed according to Doniach's Kondonecklace model. The result shows that the system approaches to the pure heavyfermion state (for x = 0.75 and 0.85) while it approaches to the manifested antiferromagnetic state (for x = 0.50) due to the pressureinduced hybridization.
 Publication:

Journal of Magnetism and Magnetic Materials
 Pub Date:
 January 1998
 DOI:
 10.1016/S03048853(97)006045
 Bibcode:
 1998JMMM..177..383H