Low-temperature properties of the Ce(Pd_{1-r}Rh_{r})_{2}Si_{2} system

M. GÓMEZ BERISSO; P. PEDRAZZINI; J.G. SERENI; O. TROVARELLI; C. GEIBEL; F. STEGLICH

PHYSICA B - CONDENSED MATTER

Elsevier

Lugar: Amsterdam; Año: 1999 vol. 261 p. 68 - 69

0921-4526

The ground state of the Ce(Pd1-rRhr)(2)Si-2 system is studied by means of magnetic susceptibility and low-temperature specific heat measurements (Cp) throughout the concentration range. The antiferromagnetic order of both stoichiometric extremes (T-N = 10.3 and 36 K for r = 0 and 1, respectively) drops abruptly below 0.4 K with mon than 30% of Pd substitution by Rh and 20% of Rh substitution by Pd on the respective sides. No magnetic order is observed between those concentrations, where the low-temperature behaviour is characterized by a C-P(T --> 0)/T divergency that continuously decreases (like the asociated entropy gain) as the Ph concentration increases. (C) 1999 Elsevier Science B.V. All rights reserved.