Eur. Phys. J. B 38, 445-450 (2004)
https://doi.org/10.1140/epjb/e2004-00138-5

Low temperature magnetic phase diagram of the cubic non-Fermi liquid system CeIn_3-xSn_x

¹ Lab. Bajas Temperaturas, Centro Atómico Bariloche (CNEA), 8400 S.C. de Bariloche, Argentina
² Max-Planck Institute for Chemical Physics of Solids, 01187 Dresden, Germany

Corresponding author: ^a pedrazp@cab.cnea.gov.ar

Received: 23 December 2003
Revised: 15 March 2004
Published online: 28 May 2004

Abstract

In this paper we report a comprehensive study of the magnetic susceptibility (χ), resistivity (ρ), and specific heat (C_P), down to 0.5 K of the cubic CeIn_3-xSn_x alloy. The ground state of this system evolves from antiferromagnetic (AF) in CeIn₃ (K) to intermediate-valent in CeSn₃, and represents the first example of a Ce-lattice cubic non-Fermi liquid (NFL) system where can be traced down to T=0 over more than a decade of temperature. Our results indicate that the disappearance of the AF state occurs near , although already at significant modifications of the magnetic ground state are observed. Between these concentrations, clear NFL signatures are observed, such as (with n<1.5) and dependencies. Within the ordered phase a first order phase transition occurs for 0.25 < x < 0.5. With larger Sn doping, different weak dependencies are observed at low temperatures between x=1 and x=3 while shows only a weak temperature dependence.