https://doi.org/10.1140/epjb/e2004-00138-5
Low temperature magnetic phase diagram of the cubic non-Fermi liquid system CeIn3-xSnx
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
In this paper we report a comprehensive study of the magnetic susceptibility (χ), resistivity (ρ), and specific heat (CP), down to 0.5 K of the cubic CeIn3-xSnx 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.
PACS: 71.20.Lp – Intermetallic compounds / 71.27.+a – Strongly correlated electron systems; heavy fermions / 75.20.Hr – Local moment in compounds and alloys; Kondo effect, valence fluctuations, heavy fermions
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2004